• The Animals: How We Communicate (1968)
• Elephants of Africa (1969)
• Frogs and How They Live (Revised) (1968)
• Horses and How They Live (1968)
• MacDonald's Farm: Animals Go to School (1971)
• Mice and How They Live (1969)
• Snakes and How They Live (19??)
• Sheep and How They Live (1969)
• Looking at Amphibians (1964)
• Life Story of the Toad (1963)
• The Frog (2nd Edition) (1957)
• What Is an Amphibian? (1962)
• The Newborn Calf (1970)
• Animals at Night (1963)
• Animal Tracks and Signs (1987)
• Animals in Spring and Summer (1983)
• Animals: Ways They Eat (1956)
• Animals: Ways They Move (1956)
• Animals at Work in Nature (1956)
• Animal Homes (1955)
• How Nature Protects Animals (1959)
• Nematode (1973)
• Flatworms (Platyhelminthes) (1962)
• Life Story of the Earthworm (1963)
• Worms: The Annelida (1955)

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