No. 01 MAX BRAND Battle's End (c. 1930) and The Three Crosses (c. 1932; 1990; listed as "first paperback publication" for both novels)
No. 14 W. C. TUTTLE Trouble at War Eagle and The Redhead at Aztec Wells (1991; listed as "first paperback publication" for both novels)
No 16 NORMAN A.FOX Hell and Hot Lead and Gun-Rider (1991)
No. 19 ZANE GREY The Kidnapping of Collie Younger and Outlaw of Palouse (1991; 1st thus)