MLS of post office workers in row, sorting letters in Main Post Office in Ottawa. Sequence showing postal workers unloading mailbags from truck, worker loading bags onto cart, FOLLOW SHOT of cart being wheeled away. Rear MS of postmen taking letters from rack, loading bundles of letters into sacks. Rear MS of post office workers sorting letters and tying them in bundles. MS of two postal workers loading mailbags unto wagon, CU of wagon's wheel as wagons is pushed past camera. CU of letters being sorted into rack. MS of postman walking down street towards camera. Sequence on post office workers sorting mail on table, hands handling letters on table, TILT UP as worker pitches letters into chute "air mail and special delivery".