1. Texas School for the Blind and Visually Impaired, 1100 West 45th Street, Austin, TX 78756
2. Program in Special Education, and coordinator, Program for Teachers of Students with Visual Impairments, Virginia Murray Sowell Center for Research and Education in Visual Impairment, Texas Tech University, Box 41071, Lubbock, TX 79404-1071
3. Program in Special Education, and codirector, Virginia Murray Sowell Center for Research and Education in Visual Impairment, Texas Tech University