Keep Buying War Bonds WWII Sky's The LimitOriginal vintage American World War Two home front propaganda poster The Sky's The Limit! Keep Buying War Bonds featuring mechanics working on a military plane machinery with more people working on fighter planes in the background, the lady in the foreground wearing a patterned red headscarf and older man in a yellow shirt on the wing with a younger man working from the ground level, the bold text in white lettering below and above with the 6th War