c/o Barbara Grimes, Summer Institute of Linguistics Inc, International (SIL)
Linguistics Center, 7500 West Camp Wisdom Road, Dallas, TX 75236, USA
Includes many resources to help research endangered languages and access to a publications library

Resource found on ethnologue.com find endangered languages that exist in a geographic area, and determine the decline, stability, or expansion of the language: https://web.archive.org/web/20120803162354/http://www.ethnologue.com/LL_docs/sociolx_bkshlf.asp

Serial publication of SIL International. Resource for papers on languages and culture, especially lesser known and endangered languages

Founded by the American Indian Studies Research Institute to establish an archive to document and preserve records of Native American languages, including digital recordings and linguistic documentation and analysis.

c/o Doug Whalen, Department of Linguistics, Yale University, New Haven, CT 06520, USA supports the study of endangered languages and promotes the maintenance of those languages in the native community provides a resource list of endangered languages included in the ELF programs and instruction in those languages whalen@haskins.yale.edu

Resource for preservation of data and the development of infrastructure for electronic archive collaboration. Includes Language Search, Metadata Search Engine, Unicode Input Facility.

https://web.archive.org/web/20201203160609/http://emeld.org/index.cfm

Documentation of Endangered Languages

Archivo de los Idiomas Indígenas de Latinoamérica