Keresan Sign Language, a.k.a. Keresan Pueblo Indian Sign Language (KPISL), is a village sign language spoken by many of the inhabitants of a Keresan pueblo with a relatively high incidence of congenital deafness (the pueblo is not identified in sources, but the cited population suggests it is Zia Pueblo).
Keresan Sign Language developed locally, and is unrelated to the trade language Plains Indian Sign Language.
References
^Kelley, Walter & Tony McGregor (2003) "Keresan Pueblo Indian Sign Language", in Reyhner, Trujillo, Carrasco, & Lockard (eds.), Nurturing Native Languages, pp. 141–148. Flagstaff: Northern Arizona University.
^Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Keresan Pueblo Indian Sign Language". Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
^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.