This image is a screenshot from a public domain trailer for the 1950 film, <i><a href="https://en.wikipedia.org/wiki/Devil%27s_Doorway" class="extiw" title="en:Devil's Doorway">en:Devil's Doorway</a></i>. 
Trailers for movies released before 1964 are in the Public Domain because they were never separately copyrighted.
Screenshot by Wayne77
1950
<a rel="nofollow" class="external text" href="http://www.tcm.com/mediaroom/video/26278/She-Wore-a-Yellow-Ribbon-Original-Trailer-.html"><i>She Wore a Yellow Ribbon</i> trailer</a>