Outline of Washington territorial evolution

{{Short description|1=Overview of and topical guide to Washington territorial evolution}}

The following outline traces the territorial evolution of the U.S. State of Washington.

Outline

Historical international territory in the present State of Washington:
Oregon Country, 1818-1846
Anglo-American Convention of 1818
Provisional Government of Oregon (extralegal), 1843-1849
Oregon Treaty of 1846
Historical political divisions of the United States in the present State of Washington:
Unorganized territory created by the Oregon Treaty, 1846-1848
Territory of Oregon, 1848-1859
Territory of Washington, 1853-1889{{cite web|date=March 2, 1853|url=http://memory.loc.gov/cgi-bin/ampage?collId=llsl&fileName=010/llsl010.db&recNum=193|title = An Act to establish the Territorial Government of Washington|format=cgi-bin|author=Thirty-second United States Congress|accessdate=June 5, 2009}}
State of Washington since 1889{{cite web|url=http://www.presidency.ucsb.edu/ws/index.php?pid=71241|title=By the President of the United States of America, A Proclamation Admitting the State of Washington to the Union|author=Benjamin Harrison|date=November 11, 1889|accessdate=June 5, 2009}}

[http://access.wa.gov/ State of Washington website]
[http://www.secstate.wa.gov/history/ Washington Secretary of State History website]
[http://www.wshs.org/ Washington Historical Society]
[http://www.historylink.org/ Washington State History]