Some examples of 3 color illustrated dj art from the 1960's taken from books in my inventory.
THE GALLOPING GOAT AND OTHER STORIES by Phyllis Reynolds Naylor. Illustrated by Robert L. Jefferson. NY: Abingdon, 1965.
MYSTERY ON A MINUS TIDE by Marg Nelson. Jacket design by Catherine Smolich. NY: Farrar, Straus & Co, 1964.
A PLACE BY THE FIRE by William MacKellar. Illustrated by Ursula Koering. NY: David McKay, 1966.