Historic Markers in Pennsylvania

Lancaster, PA · est. 1951

Rock Ford was the Georgian mansion of Edward Hand, an Irish-born Lancaster physician who rose to serve as Adjutant General of the Continental Army under George Washington. After the Revolution he settled into this home along the Conestoga, and in 1791 he welcomed President Washington himself as a guest. The mansion survives about half a mile to the southeast.

Marysville, PA · est. 1986

At the turn of the 20th century the Pennsylvania Railroad was one of the mightiest corporations on earth, and it needed to move ever-heavier freight across the Susquehanna. Its answer, completed in 1902, was a colossal forty-eight-arch stone span—the longest stone masonry arch railroad bridge ever built. It was the third crossing at this spot, replacing a wooden bridge of the 1840s and an iron one of 1877, each outgrown as rail traffic exploded.

Susquehanna Township, PA · est. 2010

At the dawn of the 20th century, the Pennsylvania Railroad built the Rockville Bridge across the Susquehanna—a 3,820-foot span of forty-eight stone arches that remains the longest stone masonry arch railroad bridge in the world. Completed in 1902, it was the third crossing the railroad raised at this spot, succeeding a wooden bridge of the 1840s and an iron one of 1877. Its massive, graceful arches testify to an age when the Pennsylvania Railroad was among the mightiest corporations on earth.

Moosic, PA · est. 2008

Opened in 1886, Rocky Glen Park grew into a beloved amusement and social center for northeastern Pennsylvania, drawing crowds for a century until it closed in 1987. The "Laurel Line" electric railroad widened its reach in the early 1900s, and the grounds became known for ethnic celebration days that mirrored the region's immigrant diversity. Live performances and rides — including the famed "Million Dollar" roller coaster — made it a cherished summer destination.

Johnstown, PA · est. 2022

On July 10, 1902, a gas explosion tore through the Cambria Iron Company's Rolling Mill Mine on this Johnstown hillside, killing 112 bituminous coal miners, most of them immigrants. It was the first of four major Pennsylvania mining disasters in a decade that became the deadliest in the history of American underground coal mining. Coming the same year as the great anthracite coal strike, the tragedy spurred the creation of a state Department of Mines in 1903 to promote workplace safety.

Philadelphia, PA · est. 2019

Founded in 1974 on Spruce Street and moved to this location in 1981, this was the first Ronald McDonald House — a place where families of hospitalized children could stay near their kids at little or no cost. It grew from the vision of pediatric oncologist Dr. Audrey Evans, who joined forces with Philadelphia Eagles GM Jimmy Murray and a McDonald's executive to make it real. What began as one Philadelphia house became a model copied by hundreds of chapters around the world.

Pittsburgh, PA

On a short cul-de-sac in Pittsburgh's Shadyside neighborhood, Roslyn Place is paved not with brick or asphalt but with tens of thousands of creosote-treated wooden blocks, laid in 1914. Wood-block paving briefly caught on in American cities because it muffled the clatter of horses and early automobiles, but nearly all of it has since rotted away or been paved over. Roslyn Place endures as one of the very few wooden streets left in the United States.

Snyder Township, PA · est. 2014

Deep within State Game Lands 54 once stood the nation's first academy devoted entirely to training game protectors—the officers who would enforce hunting laws and manage wildlife. Established in 1932 and later named for Ross L. Leffler, a longtime Game Commission member and Eisenhower's Assistant Secretary of the Interior, the school marked a turning point in treating conservation as a trained profession rather than casual patrol work. Its graduates helped bring order and science to the stewardship of Pennsylvania's woods and waters.

Canoe Township, PA · est. 2004

When 200,000 bituminous coal miners walked out nationwide in April 1927 to protest wage cuts, the strike reached the patch town of Rossiter. That November, an Indiana County judge issued a sweeping injunction so broad it barred strikers from gathering, marching, or even singing hymns. The heavy-handed order and the miners' hard conditions drew national attention and a U.S. Senate inquiry that involved Robert Wagner, soon a key author of the landmark 1935 labor law.

Philadelphia, PA · est. 1996

Roy Campanella launched his professional baseball career while still a Philadelphia high-schooler, catching in the Negro Leagues from the late 1930s before the color line fell. He then became a record-breaking star for the Brooklyn Dodgers from 1948 to 1957, winning three National League MVP awards and earning All-Star honors year after year. His Hall of Fame election in 1969 sealed his place among the game's greats.

Perry Township, PA

In 1936, three-quarters of Pennsylvania's farms still had no electricity, leaving rural families without the lights and machinery transforming towns and cities. Over the next five years, backed by federal support, fourteen consumer-owned cooperatives formed across the state to string wire into the countryside. Central Electric Cooperative, incorporated at Parker on July 12, 1937, brought power to users across seven western Pennsylvania counties.

Standing Stone Township, PA · est. 1986

In 1936, three of every four Pennsylvania farms still had no electricity, their families living much as their grandparents had. With federal backing from the New Deal, farmers banded together into consumer-owned cooperatives to string their own lines, and the Claverack Rural Electric Cooperative, incorporated that October, brought power to parts of eight northeastern counties. Within five years fourteen such co-ops had transformed rural life across the state.

Woodcock Township, PA · est. 1986

On August 5, 1936, the first rural electric pole in Pennsylvania was set into the ground here by the Northwestern Rural Electric Cooperative Association. Incorporated that April, it was the state's very first such cooperative, formed by farmers determined to bring power to homes the private utilities had passed by. Its example spread quickly, and thirteen more co-ops followed within five years.

Mansfield, PA · est. 1986

In the depths of the Depression, three of every four Pennsylvania farms still had no electric power—darkness that private utilities saw no profit in lifting. The New Deal changed that: with federal loans behind them, farmers banded together into consumer-owned cooperatives to string their own lines. The Tri-County Rural Electric Cooperative, incorporated in October 1936, brought light and modern machinery to much of north-central Pennsylvania.

Forksville, PA · est. 1987

In 1936, three-quarters of Pennsylvania's farms still lacked electricity, which private companies found unprofitable to supply. With federal backing, rural families organized consumer-owned cooperatives to bring power to themselves. The Sullivan County Rural Electric Cooperative, incorporated in December 1936, wired homes and farms across Sullivan, Lycoming, and Bradford counties.

White Township, PA · est. 1988

In 1936, three of every four Pennsylvania farms still went dark at sundown, cut off from the electric grid that already lit the cities. Federal support during the New Deal changed that, spurring farmers to band together into consumer-owned cooperatives. One of them, the Southwest Central Rural Electric Cooperative, was incorporated here in 1937 to bring power to users across seven counties.

Bedford Township, PA · est. 1989

In the depths of the Depression, three-quarters of Pennsylvania's farms still went dark at sundown—the power companies saw no profit in stringing wire down long country roads. The New Deal changed that: with federal loans behind them, rural neighbors banded together into consumer-owned cooperatives to electrify themselves. Bedford Rural Electric Cooperative, chartered in 1939, was one of fourteen such co-ops that brought light, refrigeration, and modern machinery to the farms of Bedford, Fulton, and Somerset counties.

South Woodbury Township, PA · est. 1989

When investor-owned utilities refused to run power lines into thinly settled farm country, Pennsylvania's farmers organized their own answer. Backed by federal support in the late 1930s, they formed fourteen consumer-owned electric cooperatives across the state. New Enterprise Rural Electric Cooperative, incorporated in 1938, wired homes and barns across Bedford, Fulton, and Huntingdon counties, ending generations of kerosene lamps and hand labor.

Black Township, PA · est. 1989

In the mid-1930s, three of every four Pennsylvania farms still went dark at sundown, bypassed by private power companies that saw no profit in stringing lines across thinly settled countryside. New Deal support changed that: over five years, consumer-owned cooperatives formed to bring electricity where the market would not, and the Somerset Rural Electric Cooperative was incorporated in March 1939 to serve four Pennsylvania counties and one in Maryland. Neighbors pooled resources to light their own homes and barns.

Cumberland Township, PA · est. 1990

In 1936 most Pennsylvania farms had no electricity, left in the dark by utilities unwilling to serve sparse rural routes. With federal backing, a wave of consumer-owned cooperatives sprang up across the Commonwealth, and the Adams Electric Cooperative at Gettysburg was incorporated in 1940 to carry power to members throughout south-central Pennsylvania. It was a farmer-owned answer to a need private industry had declined to meet.

Oneida Township, PA · est. 1992

In 1936 three-quarters of Pennsylvania's farms still had no electricity, leaving rural families to a life without electric light, pumps, or motors. With federal support, fourteen consumer-owned cooperatives sprang up across the state over the next five years to string wire where private utilities would not. The Valley Rural Electric Cooperative, incorporated here in 1938, brought power to seven counties from its Huntingdon headquarters.

New Stanton, PA · est. 2001

For most of the 19th century, country families had to travel miles to a town post office to collect their mail. That changed on November 24, 1896, when the Post Office Department launched two of the nation's earliest rural routes here in Westmoreland County — one from New Stanton, another from nearby Ruffsdale. The experiment, begun weeks earlier in West Virginia, spread with astonishing speed: by 1905 some 32,000 routes reached into the American countryside.

Bedford, PA · est. 1951

Built in 1816 by James Russell, the first burgess (chief elected official) of the newly organized borough of Bedford, this house survives as a handsome example of the Georgian architectural style that lingered into the early republic. Bedford had grown from a rough frontier outpost on the road west into a settled county seat, and homes like this reflected the ambitions of the men who organized its civic life.

Butler Township, PA · est. 1947

In October 1794 President George Washington rode west at the head of nearly 13,000 militiamen to put down the Whiskey Rebellion, an armed revolt against the federal excise tax on distilled spirits. On the march he lodged at Russell Tavern, whose original building still stood within sight of this spot. It was the only time a sitting president personally led troops in the field.

Honesdale, PA · est. 2016

Ruth McGinnis learned the game at her father's pool hall in the Honesdale area and rose to become Women's Pocket Billiard Champion of the World from 1932 to 1940, widely regarded as the finest American woman player for more than three decades. She defeated the celebrated athlete Babe Didrikson Zaharias and toured alongside legend Willie Mosconi, and she was later enshrined in the Billiard Congress of America Hall of Fame.

Philadelphia, PA · est. 2018

When L. Frank Baum died in 1919, the beloved land of Oz might have faded away—except that Ruth Plumly Thompson took up his pen. From her Philadelphia home she wrote nineteen Oz books between 1921 and 1939, more than Baum himself, beginning with The Royal Book of Oz. Her steady output kept Dorothy, the Scarecrow, and their friends alive in children's imaginations right up to the 1939 MGM film that made them immortal.

Richhill Township, PA · est. 1960

By 1792 Pennsylvania was passing through the last of its frontier violence, and settlers in the far western counties still built log blockhouses for refuge. Captain James Paul's company raised three of them in Greene County, and on April 17 that year soldiers hauling supplies from Thomas Ryerson's mill collided with a war party striking at the outlying settlements. The clash marks one of the closing episodes of open conflict between Native people and settlers in the region.

Freedom Township, PA · est. 1997

David S. Stoner raised Sachs Covered Bridge across Marsh Creek in 1852, using the elegant lattice-truss design patented by Connecticut architect Ithiel Town to span 100 feet of water. Little more than a decade later, both Union and Confederate soldiers crossed its planks during the 1863 Gettysburg Campaign, giving the quiet farm bridge a place in one of the war's most famous chapters. Retired from traffic after 1968 and battered by a 1996 flood, it was lovingly restored by Adams County as a scenic landmark.

Philadelphia, PA · est. 1993

Sadie Tanner Mossell Alexander broke barrier after barrier in early-to-mid-20th-century America, becoming the first Black woman admitted to the Pennsylvania bar. A tireless force in the Urban League and other civil rights causes, she was appointed in 1946 to President Truman's Committee on Civil Rights, whose landmark report helped set the stage for later desegregation. She spent her later years in this Philadelphia home.

Unity Township, PA · est. 2014

In 1846 the German-born monk Boniface Wimmer planted the first Benedictine community in the United States on the grounds of a Catholic parish that dated to 1789. From that seed grew Saint Vincent Archabbey, College, and Seminary, chartered by Pennsylvania in 1870 to teach the liberal arts and sciences. The monastery became a mother house whose monks fanned out to found ten more abbeys and colleges across eight states.

Freeland, PA · est. 1971

As Slovak immigrants poured into the anthracite coal towns of northeastern Pennsylvania in the late 1800s, they carried their Lutheran faith with them. In Freeland in 1883, largely through the efforts of the pioneer Michael Zemany, they organized what is remembered as the first Slovak Evangelical Lutheran congregation in the Western Hemisphere, holding their first service that February. The present church building went up in 1886.

Pittsburgh, PA · est. 2005

In the years after World War II, polio was one of America's most feared diseases, paralyzing thousands of children each summer. At the University of Pittsburgh's Virus Research Laboratory, a team led by Dr. Jonas Salk worked from 1948 to 1955 to develop the world's first effective polio vaccine, announcing their breakthrough to a jubilant nation on April 12, 1955. Mass inoculations of schoolchildren followed, and within a few years the disease had all but vanished from the United States.

Saltsburg, PA · est. 1984

The first salt well near here was drilled in 1813–14, and within a generation the area had grown into one of the nation's leading salt producers. What made that boom possible was transportation: the Western Division of the Pennsylvania Canal crossed here from 1829 to 1864, carrying the town's salt to distant markets. The canal was, as the marker says, the lifeline of this small industrial community.

Forest City, PA · est. 2015

Long before he lit up New York, Samuel "Roxy" Rothafel ran the Family Theater on Main Street in Forest City from 1908 to 1911, testing showman's flourishes like perfuming the air for his audiences and screening films in a brightened hall. These small-town experiments in the art of the moviegoing experience became the foundation of a legendary career. He carried his ideas to New York City, opening the opulent Roxy Theater and helping bring the Rockettes to the stage of Radio City Music Hall.

West Chester, PA · est. 1996

West Chester was the boyhood home of Samuel Barber, one of America's most beloved composers of the 20th century. A graduate of the Curtis Institute, he wrote music of lyric intensity, from the elegiac "Adagio for Strings" to the nostalgic "Knoxville: Summer of 1915," and twice won the Pulitzer Prize, in 1958 and 1963. So rooted was he in this town that he composed the alma mater for its high school.

Franklin, PA · est. 2008

In the Gilded Age boom of northwestern Pennsylvania's oil country, a Franklin-born lawyer named Samuel C. T. Dodd became one of the most consequential legal minds in American business. As Standard Oil's general solicitor, he drafted the 1882 Standard Oil Trust Agreement, a legal device that consolidated sprawling companies under a single controlling board. His invention gave John D. Rockefeller's empire its dominance and became the template copied by trusts across the economy.

Solebury Township, PA · est. 1947

Samuel D. Ingham was born on this ground on September 16, 1779, and rose to become one of the young republic's notable public men. He served as Secretary of the Treasury from 1829 to 1831 under President Andrew Jackson, alongside a long career in other state and national offices. A promoter of the early anthracite coal trade and an advocate for canals, he helped tie Pennsylvania's mineral wealth to the growing national economy.

Philadelphia, PA · est. 2000

Samuel Hopkins, who lived here, holds a singular place in American history: on July 31, 1790, he received the very first patent issued under the new United States Constitution, signed by President George Washington himself. The patent covered an improved method of making potash, a caustic potassium compound essential to soap, glass, and gunpowder and one of early America's leading exports. From that first grant would flow millions of American patents, the engine of a nation built on invention.

Buffalo Township, PA · est. 1947

Samuel Maclay was among the first generation of statesmen to represent the new United States, serving in the U.S. House and Senate as well as Pennsylvania's General Assembly in the decades after independence. He had put down roots in the Buffalo Valley of central Pennsylvania as early as 1770, when the region was still a raw frontier, and he lived out his life there until his death in 1811. His grave lies in the churchyard near this spot.

Mount Pleasant Township, PA · est. 1948

This memorial honors Samuel Meredith, a Revolutionary-era patriot and financier who became the first Treasurer of the United States, serving from 1789 to 1801 under the new federal government. Together with fellow signer George Clymer, Meredith held extensive lands in this corner of northeastern Pennsylvania, and he died at his estate, Belmont, in 1817. His life spanned the war for independence and the building of the nation's earliest financial institutions.

Mount Pleasant Township, PA · est. 1949

Samuel Meredith was a Philadelphia merchant and Revolutionary patriot who served in the militia and helped finance the struggle for independence. In 1789 President Washington named him the first Treasurer of the United States, a post he held through the government's fragile founding decade. He retired to his estate, Belmont, in the quiet hills of northeastern Pennsylvania, where he died in 1817.

Easton, PA · est. 1953

Around 1846, in his Easton gunsmith shop on this site, Samuel Phillippe crafted what is widely recognized as the first split-bamboo fishing rod made in the United States. By splitting cane into strips and gluing them back together, he produced a rod that was lighter, stronger, and more responsive than solid wood—a breakthrough that transformed sport fishing. His technique became the foundation of American rod-making for the century that followed.

Philadelphia, PA · est. 2005

Founded in 1898 as the Graphic Sketch Club, the Samuel S. Fleisher Art Memorial opened its doors on the principle that art instruction should be free to anyone who wished to learn—making it the oldest free community art school in the country. Generations of students have passed through its studios, among them Frank Gasparro, who became chief engraver at the U.S. Mint, and Louis Kahn, one of the 20th century's most revered architects.

Conoy Township, PA · est. 1991

Samuel S. Haldeman was born in 1812 a quarter-mile from here at Locust Grove, the Susquehanna-side mansion his grandfather built in 1811. A restlessly curious naturalist who later turned to the study of language, he produced more than 150 books and scientific papers and lectured across the country. His work bridged the natural sciences and philology at a time when American scholarship was coming into its own.

Philadelphia, PA · est. 2025

Samuel V. Merrick was one of Philadelphia's great early industrialists, helping found the Franklin Institute in 1825 to advance the mechanical arts and later bringing coal-gas street lighting to the city through the Philadelphia Gas Works. His Southwark Iron Foundry turned out steam engines, turbines, and ship machinery—work that supplied the Union navy during the Civil War. In 1847 he became the first president of the Pennsylvania Railroad, a line that would remake American commerce.

Bethlehem, PA · est. 2003

A chemist and inventor as well as a Civil War officer, Samuel Wetherill devised a process in 1852 for extracting white zinc oxide straight from zinc ore. The next year he founded the Lehigh Zinc Company, whose plant stood here, pioneering the American manufacture of zinc spelter and rolled zinc sheet. His work helped make the Lehigh Valley an early powerhouse of the country's metals industry.

Philadelphia, PA · est. 2015

Sarah Josepha Hale broke into a male-dominated publishing world to become one of America's first women editors, guiding Godey's Lady's Book for some four decades and building it into one of the most influential magazines of the 19th century. From her Philadelphia home she shaped American taste, letters, and domestic life, all while advocating for women's education and opportunity. She is perhaps best remembered for a persistent letter-writing campaign that helped persuade President Lincoln to proclaim a national day of Thanksgiving in 1863.

Mount Pleasant Township, PA · est. 1992

During the Revolution, thousands of women followed the Continental Army as it marched, cooking, sewing, washing, and nursing the men who fought—labor without which the army could not have stayed in the field. Sarah Mary Benjamin was one of these camp followers, accompanying a New York unit from 1780 to 1783 and, by her own vivid later account, even standing sentinel duty at Kingsbridge and carrying food to soldiers under fire at Yorktown. Living past the age of 100, she settled in this Wayne County township after 1822, where her firsthand memories of the war made her a living link to the founding generation.

Union Township, PA · est. 1980

German immigrants began settling this part of Lebanon County as early as 1729, part of the great wave of Pennsylvania Dutch migration to William Penn's tolerant colony. In the wilderness they were served by traveling missionaries, among them John Caspar Stoever, Jr., a pioneering Lutheran pastor who ministered to scattered frontier congregations. A log church rose around 1756, replaced by the present building in 1872, and the congregation honors Peter Sattazahn, a Revolutionary War soldier buried here.

Philadelphia, PA · est. 2003

During the Civil War, the Union Army needed hospitals on a scale the nation had never before contemplated, and Satterlee was among the largest and most complete. From 1862 to 1865 its long one-story wards and sprawling tent city treated thousands of sick and wounded soldiers across more than sixteen acres of West Philadelphia. Named for Gen. Richard Satterlee, the army's medical purveyor, it reflected a wartime revolution in military medicine and sanitation.

Heidelberg Township, PA · est. 1995

In 1744 Alexander Schaeffer built a hotel on the square of this Lebanon County village, and soon after began piping spring water into what became one of North America's oldest documented public water systems. In 1763 he and his wife Anna Engle deeded the land—today's Fountain Park—for the benefit of Market Street's inhabitants, an unusually civic-minded act for a colonial-era settlement. The present company carried the tradition forward when it was chartered in 1845.

Middlecreek Township, PA · est. 1947

As the Revolutionary War reached the Pennsylvania backcountry, settlers along the Susquehanna's West Branch valley faced raids that made an isolated homestead perilous. Around 1770 a fortified refuge rose on Matthias Schoch's tract beside a reliable spring, a place where scattered farming families could gather behind timber walls when danger threatened. Such blockhouses served the frontier through 1783, until the fighting finally ebbed and the surrounding country grew safe enough to abandon them.

Philadelphia, PA · est. 2004

The Schuylkill Arsenal, built in the early 1800s, was where Meriwether Lewis gathered and stored the supplies he purchased in Philadelphia before shipping them west to Pittsburgh for the start of his great expedition. For more than a century afterward the arsenal outfitted American soldiers, supplying military goods through the Civil War and both World Wars. It stood until 1963, when it was finally razed.

Port Carbon, PA · est. 1994

In the early 19th century, Pennsylvania's anthracite fields held some of the hardest, cleanest-burning coal in America — but it was worthless without a way to move it. The Schuylkill Navigation Company answered that problem, completing a 108-mile canal from Philadelphia up to Port Carbon in 1828. For a quarter century this spot marked the canal's northern end, where coal from the surrounding mountains began its journey to the industrial cities of the eastern seaboard.

Pottsville, PA · est. 1982

Carved from Northampton and Berks counties in 1811 and named for the river that drains it, Schuylkill County sits atop the southern anthracite field. Pottsville, its seat, grew from a frontier borough in 1828 into a coal-boom city by 1911. Through the 19th century, hard coal mined here was hauled by canal and rail to fuel the furnaces and homes of the industrializing East.

Philadelphia, PA · est. 2008

Established in 1858 along the Schuylkill River, the Schuylkill Navy is the oldest governing body of amateur athletics in America, a federation of rowing clubs whose members have competed from local regattas to the Olympic Games. Three-time Olympic gold medalist John B. Kelly Sr. served as its commodore in the 1930s. Its picturesque Boathouse Row has become an enduring symbol of Philadelphia and of the sport of rowing itself.

East Bradford Township, PA · est. 1915

At Sconnelltown, the division under Lord Cornwallis paused on September 11, 1777, midway through the long looping march that carried the British around the American flank at Brandywine. The halt was one link in a day of hard, dusty marching that let Howe's wing arrive undetected behind Washington's line. The marker traces the route of that famous flanking column through the Chester County countryside.

Patton Township, PA · est. 1954

About two miles from this marker, Andrew Carnegie established the iron center of Scotia in 1881, part of the vast industrial empire that made him a titan of the Gilded Age. Workers' houses went up, a railroad was laid, and machinery was set to work extracting and processing iron ore to feed Carnegie's steelmaking. Today only scattered remains survive of a place that once bustled with industry.

Greene Township, PA · est. 2013

Opened in 1895 as the Pennsylvania Soldiers' Orphans Industrial School, this state-run residential institution educated the children of veterans, giving roughly 10,000 boys and girls both schooling and a strong sense of patriotism that led many into military careers. Students earned distinction in the classroom and on the playing field, where the Cadets and Red Devils claimed many championships. The school served its mission until closing in 2009.

Scranton, PA · est. 1948

Before 1800, Ebenezer Slocum built one of the first homes here and forged the valley's first iron, hinting at the industry to come. The city took its name and its momentum from George W. Scranton and his associates, who from the town's 1840 founding made it a national leader in iron and steel for six decades. What began as a frontier forge grew into one of America's great industrial centers.