First People of the Potomac

Piscataway Park

When Europeans first arrived on the shores of North America, they found a continent inhabited by perhaps tens of millions of people! These people had arrived more than 10,000 years earlier, and through many generations had created complex societies, ...

Big Bottom Massacre

Following the American Revolution, the new Federal government, in need of operating funds, sold millions of acres of western lands to land companies. One such company, the Ohio Company of Associates, brought settlement to Marietta in 1788. Two years later, ...

Tom Mix & Tony, Jr.

This is the original Tony, Jr. that was used for the memorial to Tom Mix which was dedicated on December 5, 1947, south of Florence.

The silhouette was designed by Fernando Arriola. This Tony, Jr. was stolen and missing for ...

In Memory of Tom Mix

Jan. 6, 1880 - Oct. 12, 1940

In Memory of

Tom Mix

Whose spirit left his body on this spot.

And whose characterization and portrayals

in life served to better fix memories of

the old west in the minds of living men.

Marker is on Arizona Route ...

Army of the Potomac

July 1, 1863

First Corps marched from Marsh Run, Eleventh Corps from Emmittsburg to Gettysburg. Second Corps from Uniontown via Taneytown to near Gettysburg. Third Corps from Bridgeport via Emmitsburg to the field of Gettysburg. Fifth Corps from Union Mills via ...

Army of the Potomac

June 30, 1863

Headquarters Army of the Potomac moved from Middleburg to Taneytown. First Corps marched from Emmittsburg to Marsh Run, third Corps from Taneytown to Bridgeport. Fifth Corps from Liberty via Johnsville Union Bridge and Union to Union Mills. Sixth ...

Firepower on the Potomac

Fort Washington Park

(Left Panel):

Three pair of these large 10-inch caliber disappearing guns were the key feature of the 1890s river defense system. Each weapon could direct its 650-pound projectile at enemy ships within a seven-mile range. Battery Humphries is one ...

Erie Railroad Co. v. Tompkins

In a landmark decision, the U.S. Supreme Court ruled in 1938 that, in cases between citizens of different states, federal courts must apply state common law, not federal "general common law." Under Pennsylvania common law, Harry Tompkins of Hughestown lost ...

Potawatomi Emigration

Trail of Death

Indiana to Kansas 1838

On Oct. 11, 1838, 850 Potawatomi Indians camped at Pleasant Spring near Palmyra on the forced removal from Northern Indiana to Eastern Kansas. They passed through Palmyra at 10 o'clock October 12. That night they ...

Tomb of General U.S. Grant

This tree is planted at the site of the tomb of General U.S. Grant, Ex-President of the United States of America, for the purpose of commemorating his greatness by Li Hung Chang, guardian of the Prince, Grand Secretary of State, ...