The Howling Monkeys: Roy Carpenter’s Expedition by Nancy K. Robinson, 2nd Scholastic paperback printing, TW2222, 1972, 64 pages.
DESCRIPTION: “How do wild monkeys sleep? Find food? Take care of their babies? And what do they do all day?
Ray Carpenter wanted to know everything about monkeys. He had hundreds of questions, and none of the books he read answered all those questions. He could not learn how wild monkeys live by watching those at the zoo, in the circus, or in scientific laboratories.
So Ray Carpenter went into the jungle to study the howling monkeys. He got a lot of answers. And he proved that it is possible to study monkeys in their jungle homes.” (from the back cover)