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Statistical atlas of the United States : based upon results of the eleventh census
Gannett, Henry, (1898)
Census atlas
(2001)
Tables B-19(F), B-20(F) and B-21(F) part A & B
Tables D-1, D-2, D-3, D-4, D-5, D-6, D-7, D-8, D-9, D-10, D-11(S), D-11(F) and D-12
(1999)
Economic tables : tables B-1(S), B-2(S), B-3(S), B-4(S) parts A & B, B-5(S), B-10(S), B-11(S), B-13(S)