film posters...

"Originally, film posters were produced for the exclusive use by the theatres exhibiting the film the poster was created for, and the copies of the posters were required to be returned to the distributor after the film left the theatre. In the United States, film posters were usually returned to a nation-wide operation called the National Screen Service (NSS) which printed and distributed most of the film posters for the studios between 1940 and 1984.
Beginning in the 1980s, the American film studios began taking over direct production and distribution of their posters from the National Screen Service and the process of making and distributing film posters became decentralised in that country." wikipedia