Frank Sinatra at a recording session, Marilyn Monroe giggling with Betty Grable, Clark Gable making an entrance at a premiere: showbiz photographer Murray Garrett had a knack for catching movie idols in unguarded moments. He has been a fly on the wall at many private Hollywood parties over the years. The photographs he took of Hollywood's heyday, including shots of Bing Crosby, Bob Hope, Ava Gardner, Gregory Peck and Bogey and Baccall, are intimate...