Author
- Weiss, Harry B. (Harry Bischoff), 1883-1972 5 results
- Imlay, Gilbert, 1754?-1828? 4 results
- Agricultural History Society 3 results
- Edwards, Everett Eugene, 1900- 3 results
- Filson, John, approximately 1747-1788 3 results
- Fletcher, S. W. (Stevenson Whitcomb), 1875- 3 results
- Philadelphia Society for Promoting Agriculture 3 results
- Weiss, Grace M. 3 results
- Archives of Czechs and Slovaks Abroad 2 results
- Bell, Herbert C. (Herbert Charles), 1868- 2 results
- Board of Aid to Land Ownership 2 results
- Bowers, Douglas 2 results
- Cat Spring Agricultural Society 2 results
- Delaware. Department of Transportation 2 results
- Delaware. Department of Transportation. Division of Planning. Location and Environmental Studies Office 2 results
- Delaware. State Historic Preservation Office 2 results
- Du Barry, Edmund L. 2 results
- Frear, William, 1860-1922 2 results
- Howe, Henry, 1816-1893 2 results
- Hughes, Thomas, 1822-1896 2 results
- Jefferson, Thomas, 1743-1826 2 results
- John, J. J., 1829- 2 results
- Kilburn, Francis 2 results
- Lehigh County Agricultural Society, Allentown, Pa 2 results
- Lemon, James Thomas, 1929- 2 results
- New Jersey Agricultural Society Committee on Agricultural Society History 2 results
- Pennsylvania State University Agricultural Experiment Station 2 results
- Poussin, Guillaume Tell, 1794-1876 2 results
- Smith, Andrew F., 1946- 2 results
- Smithsonian Institution 2 results
- Tennessee. Bureau of Agriculture, Statistics, and Mines 2 results
- United States. Federal Highway Administration 2 results
- United States. Work Projects Administration. Division of Community Service Programs 2 results
- University of California, Davis. Agricultural History Center 2 results
- Van Deburg, William L. 2 results
- Washington, George, 1732-1799 2 results
- Weiss, Grace M., 2 results
- Abbott, Charles C. (Charles Conrad), 1843-1919 1 results
- Aereboe, Friedrich, 1865-1942 1 results
- Amato, Joseph Anthony 1 results
- American Chemical Society 1 results
- American Philosophical Society 1 results
- Anderson, Henry P. (Henry Pope), 1927- 1 results
- Andreasen, H. 1 results
- Angel, J. Lawrence (John Lawrence), 1 results
- Aptheker, Herbert, 1915-2003, 1 results
- Atack, Jeremy 1 results
- Åkerman, Åke, 1887-1955, 1 results
- Baatz, Simon, 1952- 1 results
- Bailey, Thomas Andrew, 1902-1983 1 results more…