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  • Map of Oregon, Washington, Idaho and Montana, (1874)
  • Oregon--Maps; Washington (State)--Maps; Washington Territory; Idaho--Maps; Montana--Maps
  • 1 map: col., 38 x 30 cm. This map, used at least as early as 1866 by Mitchell, shows the territorial borders of Washington (1853), Idaho (1863) and Montana (1864). It also shows the boundaries of Oregon (granted Statehood in 1859). Of note are the...
  • Early Washington Maps
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  • Map of main canal, gravity plan (1923)
  • Irrigation--Washington (State)--Maps; Columbia Basin Project (U.S.)
  • 1 map ; negative : 13 x 35 cm. Before the arrival to Washington State of the first irrigation projects handled by the U.S. Reclamation Service, the Northern Pacific Railroad and other railway companies funded private irrigation projects in the...
  • Early Washington Maps
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  • Cross Section on the parallel of 49, (1872)
  • United States--Boundaries--Canada; Gulf of Georgia; Vancouver Island; San Juan Island; Canal de Haro; Washington Territory
  • 1 map: 37 x 46 cm. Map shows a cross section of the 49th and 48th parallels with fathoms indicated. When the 1846 Treaty of Washington resolved the British-American boundary dispute as the 49th parallel, with Vancouver Island remaining British, the...
  • Early Washington Maps
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  • [Gulf of Georgia to Puget Sound], (1872)
  • Vancouver's Island--Maps; Gulf of Georgia--Maps; Puget Sound--Maps; Washington Territory
  • 1 map : 20 x 35 cm. Scale: 12 miles = 1 inch. When the 1846 Treaty of Washington resolved the British-American boundary dispute as the 49th parallel, with Vancouver Island remaining British, the San Juan Islands were divided along "the middle of...
  • Early Washington Maps

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