The U.S. Business Leadership Network (BLN)  promotes best practices in hiring, retaining, and marketing to people with disabilities. There are more than forty Business Leadership Network chapters in over thirty states, representing about 5,000 employers across the United States. The BLN uses a 'business to business' model to promote the inclusion of people with disabilities in the workforce.
According to the BLN website, BLN Chapters are business organizations headed by a Lead Business that "shares experiences with other members (employers) within the state or region. These activities include career fairs; disability mentoring and internship programs; and training programs, including disability business etiquette, accommodation, and other disability issues deemed significant to employers." The U.S. BLN website includes an interactive map of the BLN Affiliates  in each state, including the District of Columbia.
For more information about hiring and promoting individuals with disabilities, consult the DO-IT Knowledge Base article Why should a company hire a person with a disability? 
-  U.S. Business Leadership Network (BLN)
-  BLN Affiliates
-  Why should a company hire a person with a disability?