Algonquin rode a White House elevator to pay a sick call to Archie Roosevelt, who had the measles.











Black Jack, the U.S. Army's riderless horse.










Macaroni was a gift to Caroline Kennedy from Vice President Lyndon B. Johnson.










Huaso and Captain Alberto Larraguibel Morales clear eight feet, one and a quarter inches, and make history.











Stonewall Jackson on Little Sorrel.










Pegasus, the winged horse of Greek mythology.












King Tut and Bonnie Gray Harris.
















 Babe and Mamie Francis.