The American Missionary — Volume 35, No. 6, June, 1881

The American Missionary — Volume 35, No. 2, February, 1881

The American Missionary — Volume 35, No. 1, January, 1881

Sign Language Among North American Indians Compared With That Among Other Peoples And Deaf-Mutes First Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1879-1880, Government Printing Office, Washington, 1881, page