Wilberforce and the Blue Cave
by Leslie Coleman; ill. John Laing (Blackie and Son, 1974 / Hamlyn, 1977)
An innocent chapter book adventure weakened by several allusions far above the reading level, and by the rampant proliferation of stereotypes. The humorous appeal seems predicated on the fact that Wilberforce and friends perform everyday acts (unfolding maps, etc.) while living underwater.