Katherine Johnson and Mary Johnson are two hard working women. They both used to work at NASA. Katherine Johnson was a NASA mathimathican that helped the first rocket ship get the moon. Mary Johnson was the first black female engineer. Dorothy Vaughan was a well respected manager and mathematician. She was an amazing role model for young ladies both for races. They both shows dedication, passion, and most importantly love for their nation. Dedicated to getting the race of black another step in society and at the same time putting up with the snotty whites at the NASA shows how passionate they are. They ALL deserve to be in the encyclopedia.