Dorothy Vaughan: NASA's Leading Human Computer History_Gift_Guide and Sally cannot return to

and Sally cannot return to the present-day version of her home unless she finds the culprit and resets time

the couple barreled into the desert to track them down at any cost

the works of Machiavelli published in 1882

This book is a research-backed

New York Times bestselling author of How the Word Is Passed

Dorothy Vaughan: NASA's Leading Human Computer History_Gift_Guide and Sally cannot return toIn 1949, Dorothy Vaughan became the first African American woman to lead a team at NASA's Langley Research Center. Her work as a mathematician was an important part of helping the United States explore space. Learn more about Vaughan's life as a famous mathematician!