More on Monkey Board from Infoplease:

• Monkey Board - Monkey Board The step behind an omnibus on which the conductor stands, or rather skips about like a ...
• The Monkey and the Dolphin - When people go on a voyage they often take with them lap-dogs or monkeys as pets to wile away the time. Thus it fell out that a man returning to Athen
• Dictionary of Phrase and Fable: M - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "M"