Subject
History
38
Susquehanna Claim, 1753-1808
20
Public lands
13
Boundaries
7
Politics and government
4
Frontier and pioneer life
3
Indians of North America
3
Wyoming Massacre, 1778
3
Land titles
2
Pioneers
2
Sullivan's Indian Campaign, 1779
2
Bounties
1
Claims
1
Coal mine accidents
1
Coal miners
1
Coal mines and mining
1
Ethnology
1
Interstate controversies
1
Labor leaders
1
Labor unions
1
Land tenure
1
Riots
1
Social conditions
1