 Though the works of other writers were also used, notably Lewis Carroll and Ogden Nash, Lear's works were the main source, and characters like the Yongy-Bonghy-Bo and the Umbrageous Umbrella Maker were all Lear creations.Other characters included the Enthusiastic Elephant, the Fastidious Fish, and the Scroobious Snake.Some original material was also written based on characters created by Lear, although much of the material was a straight recital of poems and limericks or songs using Lear's poems set to music.