Percy A. Morris

• Nature Study at the Seashore
• A Field Guide to Pacific Coast Shells including shells of Hawaii and Gulf of California, 1966, The Peterson Field Guide Series, 297 pages with 72 plates.
• A Field Guide to Shells of the Pacific Coast and Hawaii. (The Peterson Field Guide Series)
• A field guide to the shells
• Boy's Book of Frogs, Toads and Salamanders
• Boy's Book of Snakes
• Boy's Book of Turtles and Lizards