Author
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Roach, Hannah Benner
2
Rogers, Henry D.
2
Rutherfurd, John, 1760-1840
2
Schuman, Howard
2
Scull, James
2
Shaver, Marilyn
2
Simmons, C. S. 1900-
2
Steeh, Charlotte
2
Trautwine, John C. 1810-1883
2
United States Works Progress Administration Pennsylvania
2
Warford, A. B.
2
West Newton and Connellsville Navigation Company
2
Wright, Joyce C., Comp
2
Administrative Management Society Philadelphia Chapter
1
Adrain, Robert, 1775-1843
1
Albright, George Leslie, 1893-1916
1
Alexander, William
1
American Society of Civil Engineers
1
Anderson, Elin L.
1
Andrews, J. H. 1927-
1
Armstrong, John
1
Armstrong, Kay
1
Ashland (Mass.)
1
Ashley, Geo. H. 1866-1951
1
Ashmead, Jacob
1
Association of Practical Surveyors of West New Jersey, Camden
1
Association of Research Libraries. Microform Project
1
Bacon, John Barnitz
1
Bailey, Lydia R., 1779-1869,
1
Bainbridge, William, 1774-1833
1
Baird, Spencer Fullerton, 1823-1887
1
Baltimore and Ohio Railaroad Co
1
Baltimore and Susquehanna Railroad Company
1
Barnard, Frederick A. P. 1809-1889
1
Barse, William P.
1
Bartram, Isaac
1
Bartram, John 1699-1777
1
Bartram, Moses 1732-1809
1
Bartram, William 1739-1823
1
Bean, Arnold H., 1908-
1
Beans, E. W.
1
Bedini, Silvio A.
1
Bennett, Hugh H. 1881-1960
1
Berks County (Pa.) and Montgomery County (Pa.)
1
Bevitt, Emogene A.
1
Bibliographical Planning Committee of Philadelphia
1
Blackman, Leah
1
Blume, Cara L.
1
Bowen, John S.
1
Briody, Elizabeth Kathleen
1
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