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  1. By: Emmons, Samuel Franklin, - Cross, Whitman, - Guyard, Anthony - Hillebrand, W. F. - Geological Survey (U.S.)
    Publication info: Washington [D.C.], United States Geological Survey, 1886
    Holding Institution: University of California Libraries
  2. By: Emmons, Samuel Franklin, - Cross, Whitman, - Eldridge, George Homans,
    Publication info: Washington, Govt. Print. Off, 1896
    Holding Institution: University of Connecticut Libraries