Nutrient Requirements of Nonhuman Primates revised ed.
National Academy Press, September, 2002.

Caps for Sale: A Tale of a Peddler, Some Monkeys and Their Monkey Business
HarperTrophy, September, 1987.

The New Adventures of Curious George
Houghton Mifflin Co (Juv), October, 1999.

The Pictorial Guide to the Living Primates
Pogonias Pr, August, 1996.

Five Little Monkeys Jumping on the Bed
Houghton Mifflin Co, 23 March, 1998.

Hug
Candlewick Press, January, 2002.

Good Morning, Gorillas (Magic Tree House, 26)
Random House (Merchandising), July, 2002.

Good Night, Gorilla
Putnam Pub Group Juv, February, 1996.