Author
Academy of Natural Sciences of Philadelphia
1
Andrew Clow & Company
1
Cope, Gilbert and Joseph Cope
1
Jergens, Eugene J.
1
Mercer, Henry C., 1856-1930
1
Pennsylvania Population Company
1
Philadelphia Record
1
Riesenman, Joseph
1
Saxe Randall, Natalie 1923-1999
1
Unger, Claude W. 1882-1945
1
Wolever, Terry
1
Wright State University. Department of Archives and Special Collections
1