Not 100 percent sure, but it looks like one of the winged euonymous species. Burning bush is considered a winged species, but there are a few others that have more distinct wings like your photos. Most are exotics, so they may not show up in normal tree and shrub books. Probably your best bet would be to take a sample to a good nursery/garden store or to an arboretum or Extension office depending on how specific an identification you need. Good luck.