1930. University of Arizona. Library. Statewide coverage of 1930 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
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1930. University of Arizona. Library. Statewide coverage of 1930 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Fifteenth Cens... University of Arizona.
1930. University of Arizona. Library. Statewide coverage of 1930 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
1930. University of Arizona. Library. Statewide coverage of 1930 Census City Wards for Arizona. Wards were determined from textual description of the boundaries. University of Arizona.