This accessible resource lists datasets on disabled and deaf people, and sign languages.
ASL Signbank
BSL SignBank
Deaf Ethnicity and Ancestry - Harvard Dataverse
Deaf Galleries, Libraries, Archives and Museums (DGLAM) in the USA
Deaf Movie Database
Early American Deaf Communities - Texas Data Repository
https://dataverse.tdl.org/dataverse/EarlyAmericanDeafCommunities
Gallaudet University Library Guide to Deaf Biographies and Index to Deaf Periodicals
Historical Sign Language Database - Georgetown University