bls_1900-80_1977.pdf
bls_1900-82_1979.pdf
bls_1850-23_1975.pdf
bls_1850-25_1975.pdf
bls_1850-43_1975.pdf
bls_1850-54_1975.pdf
bls_1850-57_1976.pdf
bls_1850-86_1976.pdf
bls_1850-88_1977.pdf
bls_1775-25_1973.pdf
bls_1795-24_1974.pdf
bls_1795-2_1973.pdf