Report on the insane, feeble-minded, deaf and dumb, and blind in the United States at the eleventh census, 1890 図書 Billings, John Shaw・United States. Census Office ·1895 ·Government Printing Office cir.nii.ac.jp
Eleventh census of the Unided States, 1890 : insane, feeble-minded deaf and dumb and blind 図書 ·Government Printing Office cir.nii.ac.jp