Guion S. Bluford, Jr. - Biographical data for the American astronaut provided by NASA. - http://www11.jsc.nasa.gov/Bios/htmlbios/bluford-gs.html
MSN Encarta - Guion Bluford - Brief biography of the United States astronaut and pilot. - http://encarta.msn.com/encyclopedia_761575579/Bluford_Guion_Stewart.html
Guion Bluford - Biography of the first African American to go into space. - http://www.windows.ucar.edu/cgi-bin/tour.cgi?link=/people/astronauts/bluford.html
Bluford, Guion Stewart, Jr. "Guy" - Personal data and spaceflights. - http://www.spacefacts.de/bios/astronauts/english/bluford_guion.htm