Bing found the following results
Deaf culture - Wikipedia
Deafness and hearing loss - World Health Organization (WHO)
NAD - Community and Culture – Frequently Asked Questions
Deaf Awareness - National Deaf Center
National Deaf Center - National Deaf Center
Deaf history | Sign Language, Education & Culture | Britannica
Deaf culture in the United States - Wikipedia
Exploring the Deaf Community: Language, Identity, and Experiences
Communicating With Deaf Individuals - National Deaf Center
NAD - Current home