This primary source comes from the Records of the U.S. Food Administration.
National Archives Identifier:
512497Full Citation: Poster 4-P-58; 'Be Patriotic sign your country's pledge to save the food.'; ca. 1917 - ca. 1919; World War I Posters, 1917 - 1919; Records of the U.S. Food Administration, Record Group 4; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/be-patriotic-sign-your-countrys-pledge-to-save-the-food, April 18, 2024]