Which Robert Heinlein novel won the 1960 Hugo Award?

In which 1960 film does Elvis Presley play Army specialist Tulsa McLean, stationed in West Germany? Which comedian released the 1960 album "The Button-Down Mind Strikes Back!"? In 1960, construction began on Egypt's High Dam at which location on the Nile? In which 1960 film does a psychiatrist say that matricide is "the most unbearable crime of all", especially for the son… In which 1960 Roger Corman film does a masochistic dental patient say, "No Novocaine. It dulls the senses"? Which poet, whose works on Harlem life include "The Weary Blues", won the NAACP's Spingarn Medal in 1960? Which 1960 epic had the tagline "They trained him to kill for their pleasure... but they trained him a little too well"? In 1960, historian Garrett Mattingly received a special Pulitzer citation for his book on which 1588 naval campaign?