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March 15, 1899 -
PIMA lost to creation of SANTA CRUZ.
(Ariz. Terr. Laws 1899, 20th assy./ pp. 49-57)
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March 10, 1881 -
March 15, 1899
PIMA lost to creation of GRAHAM.
(Ariz. Terr. Laws 1881, 11th assy./ pp. 155-157)
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February 01, 1881 -
March 10, 1881
PIMA lost to creation of COCHISE.
(Ariz. Terr. Laws 1881, 11th assy./ pp. 4-7)
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February 09, 1877 -
February 01, 1881
PIMA lost to PINAL. Area lost was the part of PIMA that had been separated from main body of the county on 1 Feb 1875.
(Ariz. Terr. Laws 1877, 9th assy./ pp. 108-109)
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January 31, 1877 -
February 09, 1877
PIMA gained a small area along the Gila River from MARICOPA.
(Ariz. Terr. Laws 1877, 9th assy./ pp. 12-13)
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February 01, 1875 -
January 31, 1877
PIMA lost to creation of PINAL and was divided into two parts until 9 Feb 1877.
(Ariz. Terr. Laws 1875, 8th assy./ pp. 19-20)
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February 14, 1873 -
February 01, 1875
PIMA lost to MARICOPA.
(Ariz. Terr. Laws 1873, 7th assy./ p. 87)
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November 10, 1864 -
February 14, 1873
PIMA created as one of four original counties in Arizona Territory.
(Howell Code, Ariz. Terr. Laws 1864, 1st assy., ch. 2/ pp. 24-25)
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