Now in paperback--a comprehensive history of clocks and calendars from aroundthe world, from the distinction of B.C. and A.D. to the Gregorian calendar tothe year 2000, which marks two millennia of human achievement. Full color.

Detailed illustrations enhance the descriptions and add immensely to the overall success of the book." - School Library Journal

"Maestro puts things into perspective [with her] ability to sort out complicated facts and make them understandable." - ALA Booklist

Betsy Maestro taught kindergarten and first grade for eleven years and earned a master's degree in elementary guidance. She has collaborated with her husband, Giulio, on more than forty-five books for young children, including The Story of the Statue of Liberty, A More Perfect Union: The Story of Our Constitution, an ALA Notable Book, as well as Delivery Van: Words for Town and Country and All Aboard Overnight: A Book of Compound Words. She lives in Connecticut.

Giulio Maestro is an author and artist who has illustrated more than 100 books for young readers, including Liberty or Death: The American Revolution: 1763-1783, which was co-written with his wife, Betsy Maestro, and What Do you Hear When Cows Sing: And Other Silly Riddles, which was co-written with his son, Marco Maestro. He lives with his wife, Betsy, in Old Lyme, Connecticut.

The Story of Clocks and Calendars by Betsy Maestro