This primary source comes from the Records of the Office of Government Reports.
Full Citation: Poster 44-PF-900b; War Planes [Portuguese]; 1942 - 1945; World War II Foreign Posters, 1942 - 1945; Records of the Office of Government Reports, Record Group 44; National Archives at College Park, College Park MD. [Online Version, https://www.docsteach.org/documents/document/war-planes-portuguese, September 8, 2024]