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.
Sky Riders [v7, #20, June 1930] ed. Henry Steeger (Dell Publishing Co., Inc., 20¢, pulp, cover by Chris Schaare)
ass. ed. R. Martini. Details supplied by John Locke from Table of Contents.