Author
Geological Survey (U.S.)
2,503
Pennsylvania
2,321
United States Congress
1,438
Pennsylvania General Assembly
1,058
Philadelphia Record
923
Pennsylvania Bureau of Topographic and Geologic Survey
853
Pennsylvania Supreme Court
790
Harris Collection of American Poetry and Plays (Brown University) Broadsides
669
Sharp, Joshua
665
Pennsylvania Comptroller-General's Office
653
Horace Howard Furness Memorial Library (University of Pennsylvania)
587
Playbill and Program Collection (University of Pennsylvania)
555
Philadelphia Theater Collection (University of Pennsylvania)
554
Franklin, Benjamin, 1706-1790
503
Walnut Street Theatre (Philadelphia, Pa.)
499
United States Bureau of the Census
491
Carey, Mathew, 1760-1839
480
Historical Society of Pennsylvania
476
Pennsylvania General Assembly. House of Representatives
470
United States Federal Emergency Management Agency
439
Price & Dickey
423
Chestnut Street Theatre (Philadelphia, Pa.)
419
Philadelphia City Planning Commission
419
O.W. Ketcham Terra Cotta Works
415
Pennsylvania Department of Public Instruction
408
Pennsylvania Historical and Museum Commission
388
Philadelphia (Pa.)
375
Ballinger Company
372
United States
365
Culture Class Collection (University of Pennsylvania)
343
Durham, Walter K (Walter Kremer), 1896-1978
339
American Culture Class Collection (University of Pennsylvania)
330
United States Congress. House
325
Saunders, Richard
324
United States Congress. House. Committee on Interstate and Foreign Commerce
312
Pennsylvania General Assembly. Senate
309
Rittenhouse, David, 1732-1796
305
United States National Park Service
305
United States Congress. Senate. Committee on Commerce
277
History of Medicine Collection (David M. Rubenstein Rare Book & Manuscript Library)
275
Rand McNally and Company
271
Federal Financial Institutions Examination Council (U.S.)
270
Shoemaker, Abraham
270
University of Pennsylvania
263
Adam Matthew Digital (Firm)
261
Pennsylvania Department of Internal Affairs
260
Pennsylvania General Assembly. Joint State Government Commission
258
Penn, William, 1644-1718
241
Zandle, Gerald L
237
Visiting Nurse Society of Philadelphia
236
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