Author
Duffy, Edward W., 1947-
2
Pennsylvania Railroad Technical & Historical Society. Philadelphia Chapter
2
Young, David W.
2
Albrecht, Harry P.
1
Awbury Arboretum (Philadelphia, Pa.)
1
Bacon, Margaret Hope
1
Borgnis, Mervin E.
1
City History Society of Philadelphia
1
Diemer, Andrew K.,
1
DuPuis, Roger, II,
1
Elsner, Henry
1
Garforth, Harry
1
Germantown Historical Society
1
Harrison, Eliza Cope
1
Meyers, Allen
1
Rohrbeck, Benson W.
1
Spivak, Joel
1
Springirth, Kenneth C.
1
Springirth, Kenneth C.,
1
Trautwine, John C. 1850-1924
1
Vible, Richard
1
Wilson, William Bender, 1839-1919
1
Wilson, William Hasell, 1811-1902
1