1. Department of Special Education, University of Wyoming, McWhinnie Hall 222, 1000 East University Avenue, Laramie, WY 82071;
2. Department of Special Education, University of Northern Iowa, Schindler Education Center, Cedar Falls, IA 50614;
3. Consultant for visual disabilities, Bureau of Children, Family, and Community Services, Iowa Department of Education, Grimes State Office Building, Des Moines, IA 50319;