This primary source comes from the Records of the Office of War Information.
National Archives Identifier:
7387462Full Citation: Uncle Sam (Information on the back: Pd for. Not used. Rejected.) [Robert S. Sloan]; circa 1942-1945; Records of the Office of War Information, Record Group 208. [Online Version, https://www.docsteach.org/documents/document/uncle-sam-information-on-the-back-pd-for-not-used-rejected-[robert-s-sloan], May 9, 2024]