Sky Riders [v5, #13, November 1929] ed. Harry Steeger (Dell Publishing Co., Inc., 20¢, 128pp+, pulp, cover by Chris Schaare)
Details supplied by John Locke.
Sky Riders [v5, #14, December 1929] ed. Harry Steeger (Dell Publishing Co., Inc., 20¢, 128pp+, pulp, cover by Chris Schaare)
associate ed. A. A. Wyn. Details supplied by John Locke.