Four Aces (Air Combat Stories, no. 2)

New York: Grosset and Dunlap, [1932]. Second issue (per Mattson), in light green cloth. With frontispiece plus three illustrations on coated paper by J. Clemens Gretta. Tight, VG copy in the original dustwrapper, slightly worn and rubbed with small splash stain at rear panel; just VG. The second book in the series. Jacket lists to "Flying Blackbirds," the fourth title in the series, also published in 1932.