This original pamphlet measures 5 1/2" by 7" & is in nice condition.  The "Gigantaphone" was a massive, custom-built Victrola used by showman Sid Grauman at Grauman's Chinese Theatre. It was prominently featured in August 1928 for the premiere of MGM’s White Shadows in the South Seas, Hollywood's first film with a synchronized sound-on-film soundtrack.