The Pinto Horse Association was established in Ellington, Connecticut in 1956 and recognized the Pinto as a breed in 1963.
The American Indian favored the Pinto for its unusual coloring and also because the blotched coat was a natural camouflage. The Pinto was also popular with the western cowboys.
Edwards, Elwyn Hartley. The Ultimate Horse Book: London, Greenwich Editions, 2000.