2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the 2000 U.S. Census secondary school district boundaries in Rhode Island. Secondary school districts provide edu... U.S. Census Bureau. Geography Division.
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Bache, A. D. (Alexander Dallas), 1806-1867, Blunt, Edmund, 1799-1866, and Harrison, A. M. (Alexander Medina), 1829-1881. from a trigonometrical survey under the direction of A.D. Bache, superintendent of the Survey of the Coast of the United States ; triangulation by ... Survey of the the Coast of the United States].
Harrison, A. M. (Alexander Medina), 1829-1881 and Hilgard, J. E. (Julius Erasmus), 1825-1891. U.S. Coast Survey ; triangulation by S.C. McCorkle, 1869 ; topography by A.M. Harrison, 1869 ; hydrography by F.P. Webber, 1868 ; verified, J.E. Hi... U.S. Coast Survey Office.