last app. in KID COLT OUTLAW #141. This is an inventory circa 1967 which Steve Englehart did some rewriting on. Engelhart's credit is from http://www.steveenglehart.com/Comics/First%20Marvel%20Scripts%20I.html
Image from cover of Two-Gun Kid # 75.
Mask and Costume added to conform to present look. Original Two-Gun Kid's name of Clay Harder inadverdently remained in the copy. Illustration may be from Two-Gun Kid # 53.