http://history.nasa.gov/40thmerc7/shepard.htm Alan Shepard Alan B. Shepard Dostupné online. Al Shepard's awards and honors Alan Shepard Alan Shepard http://history.nasa.gov/40thmerc7/shepard.htm Alan B. Shepard, Jr. "Alan B. Shepard, Jr." “40th anniversary of the Mercury 7” the original Official NASA biography for 40th Anniversary of Mercury 7 "Alan B. Shepard, Jr" Mercury at NASA Alan B. Shepard, Jr. http://history.nasa.gov/40thmerc7/shepard.htm 40th Anniversary of the Mercury 7 Mission "40th Anniversary of Mercury 7: Alan B. Shepard, Jr." Alan Shepard the original Official NASA biography for 40th Anniversary of Mercury 7 "Alan B. Shepard, Jr" "Mercury 7" biography