This primary source comes from the Records of the War Production Board.
National Archives Identifier:
534179Full Citation: Your Mind Is Your Best Tool--Use it to Work Out New Ideas!; ca. 1942 - 1943; Records of the War Production Board, Record Group 179. [Online Version, https://www.docsteach.org/documents/document/your-mind-is-your-best-tooluse-it-to-work-out-new-ideas, April 26, 2024]