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March 29, 1869 -
ROCK ISLAND exchanged with WHITESIDE (repealed act of 4 March 1854).
(Ill. Laws 1869, pub., pp. 94-95, 161)
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March 04, 1854 -
March 29, 1869
ROCK ISLAND exchanged with WHITESIDE.
(Ill. Laws 1853, priv., p. 462; Ill. Laws 1854, priv., pp. 161-162)
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February 09, 1831 -
March 04, 1854
ROCK ISLAND created from JO DAVIESS.
(Ill. Laws 1830-1831, pp. 52-53)
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