Nondiscrimination on the basis of disability by public accommodations and in commercial facilities--Department of Justice. Final rule

This rule implements title III of the Americans with Disabilities Act, Public Law 101-336, which prohibits discrimination on the basis of disability by private entities in places of public accommodation, requires that all new places of public accommodation and commercial facilities be designed and constructed so as to be readily accessible to and usable by persons with disabilities, and requires that examinations or courses related to licensing or certification for professional and trade purposes be accessible to persons with disabilities.

Published by Federal register, 1991. The guideline itself is at the source linked here.

pubmed.ncbi.nlm.nih.gov/10170774/