The treaty created a boundary between British North America and the United States west of the Rocky Mountains at the 49th parallel.

[1] Two years later on August 14, 1848 the Organic Act was signed into law by President James K. Polk creating the Oregon Territory out of the lands south of the 49th parallel, north of the 42nd parallel (northern boundary of California) and west of the Rockies to the Pacific Ocean.

[5] Additionally, the legislators continued the policy of the Provisional Government and passed a law in September excluding blacks from settling in the Oregon Territory, but allowed those already in the region to remain.

[9] This matter, which left Oregon City entirely out of the equation, was acutely partisan, with Whigs favoring the historic capital and Democrats endorsing a move to Salem.

[10] The first of these, Pacific County, encompassed coastal areas north of the Columbia River, located primarily in today's Washington state.

[15] This rival rump assembly continued to meet in Oregon City for two weeks, replete with the spectacle of Columbia Lancaster making and seconding his own motions in the "Council" himself.

[16] The claims of this minority faction were backed by a 2-1 decision of the Oregon Supreme Court, which supported the view of Governor John P. Gaines that the move from Oregon City to Salem was unconstitutional by virtue of its omnibus nature — which was held to be contrary to the provisions of the act of Congress which organized the territory.

[17] This led to a split of the court, with Justice O. C. Pratt leaving Oregon City for Salem.

[18] A situation of dual power thus briefly existed, with the (Democratic) majority of the Territorial Legislature and a minority of the Supreme Court sitting in Salem and a (Whig) majority of the Supreme Court and minority of the Legislature sitting in Oregon City.

[20] A bill was passed calling for convocation of a constitutional convention in the event that Congress refused the appeal of the Legislature for direct election rather than appointment of the Territorial Governor and judges.

[23] Matthew Deady served as the President of the Council with Benjamin F. Harding as the Speaker of the House for the session.

[25] The 5th Oregon Territorial Legislature convened in Salem on December 4, 1854 and held its proceedings until February 1, 1855.

[3][27] On January 11, 1855, the legislature created Wasco County which at the time encompassed all of Eastern Oregon.

[28] Beginning on December 1, 1856, the legislature met in Salem, using rented space, remaining in session until January 29, 1857.

[3] During the session James Kerr Kelly served as the Council president, with the Speaker of the House position held by La Fayette Grover.

[30] During the session Hugh D. O'Bryant served as president of the Council chamber, with the Speaker of the House position held by Ira F. M.

[3] This session lasted until January 22, 1859, during which Charles Drain served as Council President and Nathaniel H. Gates was Speaker of the House.