California Healthcare Interpreting Association
http://www.chiaonline.org/

International Medical Interpreters Association
http://www.imiaweb.org/

Mano a Mano: Hispanic-Deaf and Trilingual Interpreting
http://www.manoamano-unidos.org/

Migration Policy Institute: National Center on Immigrant Integration Policy
http://www.migrationinformation.org/integration/

Migration Policy Institute: Limited English Proficient Individuals in the United States Number, Share, Growth, and Linguistic Diversity - December 2011
http://www.migrationinformation.org/integration/LEPdatabrief.pdf

Registry of Interpreters for the Deaf
http://www.rid.org/

Wisconsin Bureau for the Deaf and Hard of Hearing
http://www.dhs.wisconsin.gov/sensory/

Wisconsin Bureau for the Deaf and Hard of Hearing - Interpreter list
http://www.dhs.wisconsin.gov/sensory/Interpreting/InterpreterDirectory.htm