Author
Awbury Arboretum (Philadelphia, Pa.)
1
Bacon, Margaret Hope
1
Chester County Historical Society (West Chester, Pa.)
1
Diemer, Andrew K.,
1
Germantown Historical Society
1
Harrison, Eliza Cope
1
Kashatus, William C., 1959-
1
Mainwaring, W. Thomas, 1952-
1
Smedley, R. C. 1832-1883
1
Smith, David G. 1964-
1
Wingert, Cooper H.,
1
Wooden, Sherman F.
1