...Colorado: Estes Park; Pikes Peak; Silverton... 
E. Raymond Hall 「A Synopsis of the North American Lagomorpha」
...obscurus to the north and east,one mile west of Mancos, 75971, 7000 feet, or at Silverton...
Sydney Anderson 「Mammals of Mesa Verde National Park, Colorado」
...: Silverton, 4 BS...
James S. Findley 「Speciation of the Wandering Shrew」
...:Navajo River (Jackson, 1928:120); Silverton...
James S. Findley 「Speciation of the Wandering Shrew」
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