In the 1950's, the racks were full of cowboy comics; Will Eisner's Western Picture Stories was tied for the first, along with a book called Star Ranger, in 1937. Television and the movies had a cowboy "hay day." By the mid-70's, they were mostly being reprinted rather than produced in first runs; Marvel's Westerns usually carried great covers! Steve Englehart, while writing the Avengers superhero comic in 1975, decided to visit those thrilling days of yesteryear, with a time travel story featuring Thor, Hawkeye, and Moondragon on the trail of Kang the Conqueror. As Hawkeye had discovered, Kang figured taking the 20th century would be much easier if he started in the 19th century. This story, in AVENGERS #142 and 143, had an old-fashioned train robbery. Thor and Moondragon disguised as passengers, anticipating the attack, mostly fended off by Two Gun Kid, the original Ghost Rider (or Night Rider), Kid Colt and a very Indian-costumed Hawkeye. The next half...