John Harrison

Before John Harrison created his clocks that could go to sea, sailors had a very hard time knowing exactly where they were. They could fiigure out how far north or south they were with the tools that they had, but they could not tell how far east or west they have travelled. Thanks to John Harrison's invention navigation at sea became a far more precise thing.
The Man who Made Time Travel

The Man who Made Time Travel

Kathryn Lasky
Illustrator:   Kevin Hawkes 
Nonfiction Picture Book
For ages 8 to 11
Farrar, Straus and Giroux, 2003   ISBN: 978-0374347888
Read the review »
Sea Clocks: The Story of Longitude

Sea Clocks: The Story of Longitude

Louise Borden
Illustrator:  Erik Blegvad 
Nonfiction Picture Book
For ages 8 to 12
Simon and Schuster, 2004   ISBN: 978-0689842160
Read the review »
The Longitude Prize

The Longitude Prize

Joan Dash
Illustrator:  Dusan Petricic 
Nonfiction
For ages 9 to 12
Farrar Straus and Giroux, 2000   ISBN: 978-0374346362
Read the review »
css.php