Lane, Pillard, & French, "Origins of the American Deaf-World: Assimilating and Differentiating Societies and Their Relation to Genetic Patterning". In Emmorey & Lane, eds, The Signs of Language Revisited, 2000
^a Sign-language names reflect the region of origin. Natural sign languages are not related to the spoken language used in the same region. For example, French Sign Language originated in France, but is not related to French.
^b Denotes the number (if known) of languages within the family. No further information is given on these languages.