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February 20, 1862 -
ROCK renamed PIPESTONE.
(Minn. Laws 1862, spec., ch. 30, secs. 1-2/pp. 269-270)
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May 11, 1858 -
February 20, 1862
PIPESTONE (now ROCK) lost territory when the state of Minnesota was created from Minnesota Territory.
(Schell, 72-77; U.S. Stat., vol. 11, ch. 60 [1857]/pp. 166-167 and ch. 31 [1858]/p. 285)
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May 23, 1857 -
May 11, 1858
PIPESTONE (now ROCK) created by Minnesota Territory from BROWN; included territory in present Minnesota and South Dakota.
(Minn. Terr. Laws 1857, ext. sess., ch. 14, secs. 4, 14/pp. 66-69)
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