1. Accessibility and mobility of persons who are visually impaired: a historical analysis;Blasch;J Vis Impair Blind,1995
2. My Eyes Have a Cold Nose;Chevigny,1946
3. A Brief History of Dog Guides For The Blind;Coon,1959
4. Guide dog teams in the United States: annual number trained and active, 1993–1999;Eames;J Vis Impair Blind,2001
5. The seeing eye;Eustis;Saturday Evening Post,1927