This primary source comes from the Records of the War Production Board.
National Archives Identifier:
534934Full Citation: Uncle Sam speaks to 'SAVAGE.' Let's make our answer - 'Yes'! Let's do 'our level best.'; ca. 1942 - 1943; Records of the War Production Board, Record Group 179. [Online Version, https://docsteach.org/documents/document/uncle-sam-speaks-to-savage-lets-make-our-answer-yes-lets-do-our-level-best, May 9, 2024]