Author
Philadelphia Record
2
Andrew Clow & Company
1
Collier, William 1902-1977
1
Cope, Gilbert and Joseph Cope
1
Cullen, Thomas
1
Historical Society of Hilltown Township
1
Pennsylvania Population Company
1
Purington, William J.
1
Ruff, Paul Miller, 1918-
1
Unger, Claude W. 1882-1945
1
Welsh, Herbert 1851-1941
1