Author
Greater Philadelphia Cultural Alliance
11
Philadelphia (Pa.). Urban Traffic and Transportation Board
6
A.H. Mueller & Co
5
Hopkins, Griffith Morgan, Jr
4
Kiser, Ellis
4
Philadelphia (Pa.) Urban Traffic and Transportation Board
4
Baist, G. Wm. 1859-1927
3
Gray Line (Firm)
3
Luce, Thomas F.
3
Mueller, A. H.
3
Philadelphia Area Consortium of Special Collections Libraries
3
Philadelphia Business Progress Association
3
Smith, Elvino V., 1870-1932
3
Summers, Anita A.
3
Committee of 1926 of Pennsylvania
2
DeGraw, Ronald, 1942-2006,
2
Historical Society of Pennsylvania
2
Lathrop, J. M.
2
Men's Medical Office (Philadelphia, Pa.)
2
Ogier, St. Julian
2
Philadelphia Rapid Transit Company
2
Rand McNally and Company
2
Southeastern Pennsylvania Transportation Authority
2
Taylor, Frank H. 1846-1927
2
Young Men's Christian Association of Philadelphia and Vicinity
2
Adams, Carolyn Teich
1
Adams, Carolyn Teich,
1
Afro-American Historical and Cultural Museum (Philadelphia, Pa.)
1
Alexander, Julia M.
1
Anastasia, George
1
Anastasia, George,
1
Archives of American Art
1
Balch Institute for Ethnic Studies. Museum
1
Barrie, Robert, 1866-
1
Barthel, Otto
1
Bell Telephone Company of Philadelphia (Pa.)
1
Blanchard, Jean-Pierre, 1753-1809
1
Blodget, Lorin
1
Breton, Arthur J.
1
Bromley, George Washington
1
Bromley, Walter Scott
1
Bryn Mawr College Bryn Mawr College Urban Research Project
1
Bureau of Municipal Research (Philadelphia, Pa.)
1
Bush-Brown, James
1
Bush-Brown, Louise, 1897-1974
1
Camac, William
1
Carter, Joseph C. 1909-
1
Cauffman, Lawrence
1
Central Electric Railfans' Association
1
Chamber of Commerce of Greater Philadelphia Research Dept
1
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