Author
Historical Society of Pennsylvania
3
Nolan, J. Bennett 1877-1964
2
OCLC
2
Diffenderffer, Frank Ried, 1833-1921
1
Germantown Historical Society
1
Heim, John M.
1
Historical Records Survey (U.S.)
1
Pennsylvania Historical Commission
1
Pennsylvania Historical Survey
1
United States. Works Progress Administration
1