Symons, T. W. (1895). Index map of Upper Columbia River Survey, Sheets Nos 1 to 12: To accompany report of Capt. T. W. Symons, Corps of Engineers, dated May 22nd 1895. G.P.O.].
Cita Chicago Style (17a ed.)Symons, T. W. Index Map of Upper Columbia River Survey, Sheets Nos 1 to 12: To Accompany Report of Capt. T. W. Symons, Corps of Engineers, Dated May 22nd 1895. [Washington, D. C.: G.P.O.], 1895.
Cita MLA (8a ed.)Symons, T. W. Index Map of Upper Columbia River Survey, Sheets Nos 1 to 12: To Accompany Report of Capt. T. W. Symons, Corps of Engineers, Dated May 22nd 1895. G.P.O.], 1895.
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