Tetra Society of North America, The
Society, Disabled, Assistive Technology, Services - Tetra Society of North America, The. Recruits skilled volunteer engineers and technicians to create assistive devices for people with disabilities.
https://www.tetrasociety.org/
ReadAssist Home
Society, Disabled, Assistive Technology, Resource Directories - ReadAssist. Links to sources of e-books, audio books, paper books, and devices to help disabled and blind readers.
http://readassist.org/