GPS.gov: I'd not been to the U.S. government's GPS site for quite a while. It's aimed at the public and includes information on how to submit map changes (graphic at right) and a STEM curriculum for middle schoolers.
BBC: 100 Women: Gladys West - the 'hidden figure' of GPS - When Mrs West started her career at the Naval Surface Warfare Center in Virginia in 1956, just one other black woman and two black men worked alongside her. She went on to work on GPS.