More than three hundred years ago, explorers wandered the seas using unreliable maps. What they really needed to know was the longitude of their locations. This nonfiction book for young readers tells the fascinating story of how carpenter John Harrison won the British government prize for building a clock that provided the necessary information. show more show less
Eve Branson, aka Granny, is the author of travel articles, novels, children's stories, and is currently working on a personal memoir. She is also the founder of the Eve Branson Foundation, a not-for-profit institution that provides training and income-producing projects for girls living in the Atlas Mountains of Morocco.