C. W.  Johnson, ?Order Diptera?, in The insects of New Jersey. A list of the species occurring in New Jersey, with notes on those of economic importance, J. B.  Smith, Ed. 1900, pp. 617-699.

C. W.  Johnson, ?A supplementary list of the Diptera of New Jersey?, Entomological News, vol. May 1904, pp. 157-163, 1904.

C. W.  Johnson, ?Diptera of New Jersey?, Annual report of the New Jersey State Museum, vol. 1909(1910), pp. 703-814, 1910.