“The Ransom Center’s movie poster collection consists of an estimated 10,000 posters and spans the entire history of film from the silent era to the present day. All sizes of American film posters are represented: Window Cards (14″ x 22″), Inserts (14″ x 36″), Half Sheets (22″ x 28″), One Sheets (27″ x 41″), Three Sheets (41″ x 81″), Six Sheets (81″ x81″), and 24 Sheets (i.e.: billboards, 9′ x 20.5′).”

—Harry Ransom Center — Movie Poster Collection