THE INCREDIBLE HULK's original series ended after 6 issues, but he continued to appear in different series, including the first several issues of THE AVENGERS. Eventually, his series was revived in TALES TO ASTONISH #60 (Oct'64), and has been going non-stop ever since!
The revived HULK series was initially written by Steve Ditko, who had taken over the character when Jack Kirby abruptly departed while working on HULK #6 a year-and-a-half earlier. Ditko found himself doing 3 series for Marvel at the same time, the others being AMAZING SPIDER-MAN and his own creation, Dr. Strange, which had become the regular back-up feature in STRANGE TALES.
Among Ditko's chief contributions to the HULK series were a non-stop "cliffhanger" format (a revival of a style that had previous been used by Bill Everett on the first 12 episodes of SUB-MARINER all the way back in 1939; this was 5 months before Ditko also began using it in Dr. Strange), and the introduction of long-running supporting character (and nemesis and romantic rival), Major Glenn Talbot, who started out as a dead ringer for actor Lee Van Cleef! HULK creator Jack Kirby continued to do all the covers, and eventually returned to the series after 8 installments by Ditko.
TALES TO ASTONISH 60 / art by Jack Kirby & Paul Reinman (October 1964)
TALES TO ASTONISH 61 / art by Jack Kirby & Chic Stone (November 1964)
TALES TO ASTONISH 62 / art by Jack Kirby & Chic Stone (December 1964)
TALES TO ASTONISH 63 / art by Jack Kirby & Chic Stone (January 1965)
TALES TO ASTONISH 64 /
art by Jack Kirby & Vince Colletta (February 1965)
TALES TO ASTONISH 65 / art by Jack Kirby & Chic Stone (March 1965)
TALES TO ASTONISH 65 / art by Jack Kirby & Chic Stone
TALES TO ASTONISH 66 /
art by Bob Powell, Jack Kirby & Frank Giacoia (April 1965)
TALES TO ASTONISH 67 / art by Jack Kirby & Chic Stone (May 1965)
TALES TO ASTONISH 68 /
art by Bob Powell, Jack Kirby & Vince Colletta (June 1965)
TALES TO ASTONISH 69 / art by Jack Kirby & Frank Giacoia (July 1965)
Artwork Copyright (C) Marvel Comics
Raw Scans of #60, 61, 62, 63, 65, 66, 67, 68 & 69 supplied by Barry Pearl
Raw scan of #64 from my collection
Restorations by Henry Kujawa