About Vlasta Van Kampen Books by Vlasta Van Kampen Sad, Mad, Glad Hippos by (author) Jane Yolen illustrated by Vlasta Van Kampen One Hippo Hops by (author) Jane Yolen illustrated by Vlasta Van Kampen Hip Hippos by (author) Jane Yolen illustrated by Vlasta Van Kampen A Drop of Gold by (author) Vlasta Van Kampen Ages 2 to 5 Grades p to k What's the Difference? 10 Animal Look-Alikes by (author) Judy Diehl & David Plumb illustrated by Vlasta Van Kampen Ages 5 to 8 Grades k to 3 Muddle Cuddle by (author) Laurel Dee Gugler illustrated by Vlasta Van Kampen Ages 2 to 6 Grades p to 1 Revoltijo cariñoso by (author) Laurel Dee Gugler illustrated by Vlasta Van Kampen Ages 2 to 6 Orchestranimals by (author) Vlasta Van Kampen & Irene C. Eugen-Raisen