Merriman, Chad. The avengers / Chad Merriman. - Trowbridge,Wiltshire [Eng.] : Redwood Books, 1960. - 141 p. ; 18 cm. - Gunsmoke westerns . First published in the United States by Ballantine Books in 1959. ISBN: 0754080153 (hc) Subjects--Topical Terms: Western stories.