Author
A citizen of the United States
1
A.B. Farquhar
1
A.D. Marble & Co
1
Abbott, Charles C. 1843-1919
1
Abrahamson, Roy A.
1
Abramson, Rudy
1
Academy of Natural Sciences of Philadelphia
1
Adair, James, approximately 1709-1783
1
Adams, Ansel, 1902-1984
1
Addington, Charles, 1949-
1
Aereboe, Friedrich, 1865-1942
1
Africa, J. Simpson, 1832-1900
2
Agresti, Olivia Rossetti
1
Agricola
1
Agricultural College of Pennsylvania
2
Agricultural Convention of the State of Delaware
1
Agricultural History Society
3
Agricultural Society (Chester County, Pa.)
1
Agricultural Society and Institute of New Castle County, Del
1
Agricultural Society of Bucks County (Pa.)
1
Agricultural Society of Kent County (Del.)
1
Agricultural Society of New Castle County (Del.)
1
Agricultural Society of New Castle County, Delaware
1
Agricultural Society of Somerset County (Pa.)
1
Agricultural Society of St. John's Colleton (S.C.)
2
Aitken, Barbara B., 1938-
1
Albany County Agricultural Society (N.Y.)
1
Alden, Edwin
1
Aldrich, Nelson W. 1841-1915
1
Alexander, Will Winton, 1884-1956
1
Allan, Chilton
1
Allen, C. E. R.
1
Allen, Emory Adams, 1853-
1
Allen, Henry Ware
1
Allen, Horace R.
1
Allen, Margaret
1
Allen, Nathan, 1813-1889
1
Allen, Rutillus Harrison, 1907-
1
Allen, William Henry, 1808-1882
1
Allerton, Samuel Waters, 1828-
1
Amato, Joseph Anthony
1
Amberson, William Ruthrauff, 1894-
1
Ambrosino, Guy
1
Amendola, Sandra L.
1
American Almanac Collection (Library of Congress)
3
American Chemical Society
1
American Enterprise Institute for Public Policy Research
1
American Free Trade League
1
American Imprint Collection (Library of Congress)
5
American Liberty League National Lawyers Committee
1
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