Primary
PBS

Pbs Learning Media: Primary Source Set: 19th Century Schools for the Deaf, Blind

For Students 9th - 10th Standards
This collection uses primary sources to explore the development of schools for deaf and blind students in the nineteenth century.
Website
Other

W3 C Recommendations: Homepage

For Students 9th - 10th
"These guidelines explain how to make Web content accessible to people with disabilities. The guidelines are intended for all Web content developers (page authors and site designers) and for developers of authoring tools."