North by Northwest (1959) - Letter from Otis L. Guernsey - Undated letter from Otis L. Guernsey to Alfred Hitchcock, believed to be sent in the early 1950s. Hitchcock later purchase the story from Guernsey as part of the development of ''North by Northwest'' (1959).The 39 Steps (1935) - on set - On set photograph from ''The 39 Steps'' (1935).Alfred Hitchcock (1976) - Photograph of Alfred Hitchcock, taken in August 1976 by photographer David Montgomery.Frenzy (1972) - on location - Photograph taken during location filming for ''Frenzy'', taken by photographer Frank Barratt. Assistant director Colin M. Brewer is stood opposite to Hitchcock, with cinematographer Gilbert Taylor in the middle.The Birds (1963) - on set - Publicity still of Hitchcock and the cast from ''The Birds''.Alfred Hitchcock (1956) - Promotional photograph for ''Alfred Hitchcock Presents'' from 1956, taken by Gene Trindl.Strangers on a Train (1951) - film frame - Film frame from ''Strangers on a Train'' (1951) showing Hitchcock's cameo appearance.photograph - Photograph of Alfred Hitchcock.Torn Curtain (1966) - on set - On set photograph from ''Torn Curtain''.Notorious (1946) - on set - On set publicity still for ''Notorious''.photograph - Photograph of Alfred Hitchcock.Alfred Hitchcock (1950s) - Photograph of British actress Diana Dors and Alfred Hitchcock.Torn Curtain (1966) - publicity still - Publicity still for ''Torn Curtain'' (1966).L'Incroyable Cinema (1971) - Front cover of the Spring 1971 edition of the British fanzine ''L'Incroyable Cinema''.Torn Curtain (1966) - on set - On set photograph from ''Torn Curtain'' (1966) of Princess Margaret and Alfred Hitchcock, taken in November 1965.