The Access Board is an independent federal agency that promotes equality for people with disabilities through leadership in accessible design and the development of accessibility guidelines and standards. Created in 1973...
Funded by the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) at the Administration for Community Living - in HHS. Southeast Region (region 4) page is at: http://adata.org/find-your-region#region4
Find accessible places to go, worldwide. For each venue, has an access guide - "short report that outlines the disabled and access features at a particular venue."
Also has "accessibility checker" of some retail chains.