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  1. By: Geological and Geographical Survey of the Territories (U.S.) - Hayden, F. V. - Thomas, Cyrus,
    Publication info: Washington :Govt. Print. Off.,1872.
    Holding Institution: Harold B. Lee Library (archive.org)
  2. By: Thomas, Cyrus,
    Publication info: S.l. :s.n.,1873?
    Holding Institution: Canadiana.org (archive.org)
  3. By: Riley, Charles V. (Charles Valentine), - Packard, A. S. (Alpheus Spring), - Thomas, Cyrus, - United States Entomological Commission.
    Publication info: Washington :G.P.O.,1880.
    Holding Institution: University of Florida, George A. Smathers Libraries
    BHL Collections: Expanding Access to Biodiversity Literature
  4. By: United States Entomological Commission. - Packard, A. S. (Alpheus Spring), - Riley, Charles V. (Charles Valentine), - Thomas, Cyrus, - Geological Survey (U.S.)
    Publication info: Washington [D.C.] :G.P.O.,1878.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Thomas, Cyrus, - United States Entomological Commission.
    Publication info: Washington,Govt. Print. Off.,1879.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Packard, A. S. (Alpheus Spring), - Riley, Charles V. (Charles Valentine), - Thomas, Cyrus, - United States Entomological Commission. - United States. Congress - United States. Congress. House. - United States. Department of Agriculture.
    Publication info: Washington :G.P.O.,1883.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library