Artist Unknown US0 Keep It Up 1944. GI and sailor are all smiles as they enter a USO facility. For over 80 years United Service Organizations have served the men and women of the U.S. military at 230 centers worldwide. The USO was started in 1941 by Mary Ingraham at FDR’s request to provide morale and recreation for U.S. military personnel. 21×14. near mint card.