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March 06, 1931 -
MULTNOMAH lost to COLUMBIA.
(Ore. Laws 1931 gen. 36th reg. sess. ch. 289/p. 515)
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February 25, 1901 -
March 06, 1931
MULTNOMAH exchanged with COLUMBIA.
(Ore. Laws 1901 21st reg. sess. pp. 126-127)
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February 20, 1893 -
February 25, 1901
MULTNOMAH gained small area (part of the town of Sellwood) from CLACKAMAS.
(Ore. Laws 1893 gen. 17th reg. sess. pp. 78-79)
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February 24, 1885 -
February 20, 1893
MULTNOMAH gained from COLUMBIA.
(Ore. Special Laws 1885 13th reg. sess. p. 324)
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October 24, 1864 -
February 24, 1885
MULTNOMAH gained from COLUMBIA.
(Ore. Laws 1864 3rd reg. sess. p. 62)
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February 14, 1859 -
October 24, 1864
Inherited from Oregon Territory
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