bls_1900-19_1976.pdf
bls_1900-26_1976.pdf
bls_1900-42_1976.pdf
bls_1900-43_1976.pdf
bls_1900-45_1976.pdf
bls_1900-49_1976.pdf
bls_1900-50_1976.pdf
bls_1660-88_1970.pdf
bls_1685-51_1971.pdf
bls_1685-62_1971.pdf
bls_1660-1_1969.pdf
bls_1660-30_1970.pdf