Other
Coal trade
1
Compromise of 1850
1
Customs administration--United States
1
Education--Pennsylvania--History
1
Lumber trade--Pennsylvania--New Hope
1
Mexican War, 1846-1848
1
Pennsylvania--History--1775-1865
1
Railroad--Construction
1
Republican Party (Pa. : 1792-1828)
1
Roads--Design and construction
1
Scott, Dred
1
Slavery
1
Treaties, etc.--United States--Algiers--1815
1
United States--Latin American relations
1
Wilmot proviso
1