What If (1977 1st Series) #29...Published Oct 1981 by Marvel

"What If the Avengers Were the Last Superheroes on Earth?" Script by Steven Grant, pencils by Alan Kupperberg, inks by Al Gordon. Starring Thor, Iron Man, the Hulk, Giant Man, and the Wasp. Cameos by Spider-Man, the Fantastic Four, Doctor Doom, the original X-men, Daredevil, Magneto, Electro, Doctor Octopus, Doctor Strange, and other assorted characters! Also in this issue: "What If Sub-Mariner Never Regained His Memory?" Script by Steven Grant, pencils by Rich Buckler (misspelled "Rick Buckler"), inks by Bob McLeod. Captain America cameo. The Inhumans star in an "Untold Tales of the Marvel Universe" back-up story, "The Search for the Great Refuge!" Script by Peter Gillis, pencils by Ron Wilson, inks by Joe Sinnott. Michael Golden cover