English: 1951. "1950" in the file name was a mistake; the film was released in 1951.

English: Scan via Heritage Auctions. Cropped from the original image.

English: Presumably a work-for-hire for the film's distributor, RKO Radio Pictures.

English: No permission is required. The poster did not include a valid copyright notice. Even if other copies of the poster did carry a valid notice—evidence suggests this is not the case, based on other copies of the poster listed at Heritage Auctions—the copyright for the artwork was not renewed, as was required by American copyright law to extend/maintain protection for works published 1963 or earlier. In order to maintain copyright protection, the poster would have had to be renewed 28 years after publication, in either 1977 or 1978. To search renewals in 1977, see UPenn's copyright resource for 1977, check the sections for "Artwork: Original registrations and renewals", and refer to the links to search the copyright catalogs for that year. To search renewals in 1978, see the searchable Copyright Catalog (1978 to present). Because it was not renewed, copyright lapsed for the poster in 1978. Note that the poster art is a distinct work from the film it represents and had to be renewed separately.