Gary L. Williams: Contract Cowboy - Cowboy, dog and horse trainer, and McNab breeder. Photographs and profiles of dogs, videos for sale, and services. Paso Robles, California.
Herding on the Web: The Collie in Mendocino - An article written by Lulu McNab, which appeared in Overland Monthly magazine in May, 1894, about the "Scotch collies" which where the foundation of the breed.
McNab Breeders List - Breeders listed by state and their contact information.