Intended to help interpretive staff identify programmatic needs of disabled U.S. national park visitors, the booklet suggests reasonable modifications to assure participation. An introductory section reviews legal and policy guidelines, the emergence of the disability movement in America, and components of integrated programing. Guidelines and resources are then set forth for working with visitors with the following disabilities: mobility impairments, visual impairments, deafness and hearing impairments, mental or learning impairments (mental retardation, learning disability, and emotional disturbance). General characteristics of each disability are examined. A final section on comprehensive planning and implementation emphasizes a systematic approach to access planning. Appended material includes a program accessibility checklist and a list of audiovisual resources. (CL)