President Gerald R. Ford (R), 93, died yesterday at his home in California. No cause of death has been reported, however Ford has recently suffered from pneumonia and heart ailments. Ford was appointed Vice President in 1973 following the resignation of Spiro Agnew (R), and then rose to the office of president in 1974 following the resignation of Richard Nixon (R)—the only president in U.S. history never elected to either office.