Mitchell, S. A. (1860). Map of Oregon, Washington, and part of British Columbia. s.n.].
Cita Chicago Style (17a ed.)Mitchell, S. Augustus. Map of Oregon, Washington, and Part of British Columbia. [S.l.: s.n.], 1860.
Cita MLA (8a ed.)Mitchell, S. Augustus. Map of Oregon, Washington, and Part of British Columbia. s.n.], 1860.
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