Ant-Man: Flight of the Yellowjacket

Mike Friedrich, Steve Gerber and Steve Englehart
Herb Trimpe and P. Craig Russell
Sal Buscema and George Tuska

Armageddon on Avenue A
Iron Man #44

The Incredible Shrinking Doom
Marvel Feature #4
Marvel Feature #5
Marvel Feature #6
Marvel Feature #7
Marvel Feature #8
Marvel Feature #9
Marvel Feature #10

In the Jaws of the Serpent
Giant-Size Defenders #4
Defenders #22
Defenders #23
Defenders #24
Defenders #25

Journey to the Center of the Ant
Avengers #137
Avengers #138
Avengers #139
Avengers #140

Note: Hank Pym appears in a majority of Avengers issues between #150-#181, with #161-#162 standing out in particular, but otherwise the issues can be read more in an ensemble capacity.

Avengers: When Avengers Clash
Avengers #150-#162
Marvel Team-Up #59
Marvel Team-Up #60
Avengers #164-#166

See: Avengers: The Matter of Heroes