UNDERWOOD, Clarence, artist. Back our girls over there / United War Work Campaign. / Y.W.C.A. N.p.: n.p, [ca 1918]. -- COFFIN, Haskell, artist. Joan of Arc Saved France / Women of America Save Your County / Buy War Savings Stamps. New York: United States Printing & Lithograph Co., 1918. "S-2" printed lower left. -- JONAS, Lucien, artist. Four Years in the Fight / The Women of France / We Owe Them Houses of Cheer / Y.W.C.A. New York: The Strobridge Litho. Co., 1918. -- TREIDLER, Adolph, artist. For Every Fighter a Woman Worker / Care for Her through The YWCA. New York: American Lithographic Co., 1918. -- Together, 4 posters ranging in size from 21 x 28 in. to 30 x 40 in. Conditions vary, though each features some ripping and tearing to edges and corners; some with loss.