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  1. By: Roberts, John W. (John William),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Roberts, John W. (John William), - United States. Agricultural Research Service.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, [1939?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Roberts, John W. (John William),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Wyoming Dahlia Garden. - Roberts, John W. (John William), - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Maplewood, New Jersey, Wyoming Dahlia Gardens, [1924?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Seed & Nursery Catalogs
  5. By: Wyoming Dahlia Garden. - Roberts, John W. (John William), - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Maplewood, New Jersey, Wyoming Dahlia Gardens, [1925?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Seed & Nursery Catalogs
  6. By: Wyoming Dahlia Garden. - Roberts, John W. (John William), - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Maplewood, N.J, Wyoming Dahlia Garden, [1923]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Seed & Nursery Catalogs
  7. By: Wyoming Dahlia Garden. - Roberts, John W. (John William), - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Maplewood, New Jersey, Wyoming Dahlia Garden, [1924?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Seed & Nursery Catalogs
  8. By: Wyoming Dahlia Garden. - Roberts, John W. (John William), - Henry G. Gilbert Nursery and Seed Trade Catalog Collection.
    Publication info: Maplewood, New Jersey, Wyoming Dahlia Garden, [1925?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Seed & Nursery Catalogs
  9. By: United States. Bureau of Plant Industry. - Kearney, Thomas H. (Thomas Henry), - Reed, C. A. (Clarence Arthur), - Roberts, John W. (John William), - Scott, W. M. (William Moore), - Stockberger, W. W. (Warner Webster) - Thompson, James.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Bureau of Plant Industry, 1913
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Roberts, John W. (John William), - United States. Bureau of Plant Industry.
    Publication info: Washington, U.S. G.P.O, 1913
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: Roberts, John W. (John William),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1918
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library