Author
Episcopal Academy (Newtown Square, Pa.)
1
Pennsylvania Historical and Museum Commission
1
Pennsylvania Society of New York
1
Pennsylvania State Library
1
Pennsylvania State Library General Reference Station
1
Pennsylvania State Library. General Reference Section
1
Pennsylvania State Library. Reference Section
1
Pennsylvania. Bureau of Topographic and Geologic Survey
1
State Library of Pennsylvania. General Reference Section
1
Trussell, John B. B.
1