Vacation Under the Volcano by Mary Pope Osborne

Vacation Under the Volcano : Paperback : Random House USA Inc : 9780679890508 : 0679890505 : 24 Mar 1998 : In their first adventure as Master Librarians, Jack and Annie go to Pompeii to bring back an ancient story that is in danger of being lost forever. But before they can find it, the town's volcano erupts. Illustrations.