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  1. By: Johnson, A. G. - Haskell, Royal J. (Royal Joyslin), - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1920
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Haskell, Royal J. (Royal Joyslin), - United States. Office of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Office of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1926
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Haskell, Royal J. (Royal Joyslin), - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1924
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Haskell, Royal J. (Royal Joyslin), - United States. Office of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Office of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1928
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Haskell, Royal J. (Royal Joyslin), - United States. Office of Plant Disease Survey and Pathological Collections.
    Publication info: [Washington, D.C.], Office of Plant Disease Survey and Pathological Collections, Bureau of Plant Industry, United States Department of Agriculture, 1925
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Haskell, Royal J. (Royal Joyslin), - Wood, Jessie I. - United States. Office of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Office of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1929
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Haskell, Royal J. (Royal Joyslin), - Wood, Jessie I. - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1923
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Haskell, Royal J. (Royal Joyslin), - Wood, Jessie I. - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1922
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Haskell, Royal J. (Royal Joyslin), - United States. Office of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Office of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1929
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Hutchins, Lee M. - Haskell, Royal J. (Royal Joyslin), - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1920
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: Haskell, Royal J. (Royal Joyslin), - United States. Office of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Office of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1930
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  12. By: Haskell, Royal J. (Royal Joyslin), - United States. Department of Agriculture. - National Broadcasting Company.
    Publication info: [Place of publication not identified], [U.S. Department of Agriculture], February 8, 1933
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  13. By: Haskell, Royal J. (Royal Joyslin), - United States. Department of Agriculture. - National Broadcasting Company.
    Publication info: [Place of publication not identified], [U.S. Department of Agriculture], April 21, 1933
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  14. By: Haskell, Royal J. (Royal Joyslin), - United States. Department of Agriculture. - National Broadcasting Company.
    Publication info: [Place of publication not identified], [U.S. Department of Agriculture], March 19, 1931
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  15. By: United States. Extension Service. - Haskell, Royal J. (Royal Joyslin),
    Publication info: [Washington], 1944
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  16. By: Haskell, Royal J. (Royal Joyslin), - McMurtrey, J. E. - Fant, G. W. - United States. Division of Mycology and Disease Survey.
    Publication info: [Washington, D.C.], Division of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1931
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  17. By: Haskell, Royal J. (Royal Joyslin), - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1919
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  18. By: Haskell, Royal J. (Royal Joyslin), - Martin, G. Hamilton. - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1919
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  19. By: Hesler, L. R. - Haskell, Royal J. (Royal Joyslin), - United States. Plant Disease Survey.
    Publication info: [Washington, D.C.], Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1919
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library