I think this is a really nice cover. It's from 1928 and is such an unusual topic for Bolles, the only nurse related image of his I've encountered. Virtually all the top illustrators of the Golden Age employed nurses in their World War I posters including Christy, Fisher, Flagg (who stuck himself in a poster in his Uncle Sam regalia, groping the nurse) and others. I've long pondered why Bolles didn't contribute to this effort as well, but from what I've learned there was a pecking order for who and who didn't get to produce war posters and given that Flagg had a lot to do with organizing the creation of these posters as part of the Civilian Preparedness Committee, there was more than a little self-promotion involved. These depictions had little connection to the women who actually served in the front lines, who were made of far sturdier stuff than the standard issue pretty girls in the posters.