The JSA's popularity grew until they regained their own title. "All Star Comics" #58 (January/February 1976) saw the group return as mentors to a younger set of heroes briefly called the "Super Squad" until they were integrated into the JSA proper. This run lasted until #74, with a brief run thereafter in "Adventure Comics" #461–466, but it had three significant developments: it introduced Power Girl in "All Star Comics" #58, chronicled the death of the Golden Age Batman in "Adventure Comics" #461–462, and, after nearly 40 years, it finally provided the JSA with an origin story in "DC Special" #29. The Huntress was introduced in "DC Super Stars" #17 (Nov.-Dec. 1977) which told her origin, and "All Star Comics" #69 (Nov.-Dec. 1977), which was published the same day. The 1970s run of "All Star Comics" was written by Gerry Conway and Paul Levitz, and artists included Ric Estrada, Wally Wood, Keith Giffen, Joe Staton, and Bob Layton. The series was noteworthy for depicting the heroes as having aged into their 50s. The artwork gave them graying hair and lined faces. It was highly unusual, then or now, for a comic book to have heroes this old. Most comic books obscure the timelines or periodically relaunch the series to keep the characters youthful. This depiction was a consequence of the fact that the heroes were closely linked to World War II era. This became problematic in the 1980s when the heroes would logically be well into their 60s. The explanation given for this by writer Roy Thomas in "All-Star Squadron Annual" #3 was that the team, and several friends, have absorbed energy from the magical villain Ian Karkull during an adventure in the 1940s that stunts their aging process. Meanwhile, the JSA continued their annual team-ups with the Justice League. Notable events include meeting the Fawcett Comics heroes, including Captain Marvel, the death of Mr. Terrific, and the origin of the Black Canary. The JLA/JSA crossovers often involved a third team as well such as the Legion of Super-Heroes, the New Gods, the Secret Society of Super Villains, and the All-Star Squadron. "All-Star Squadron" was a series taking place in the JSA's original setting of the wartime 1940s. This led to a spinoff, modern day series entitled "Infinity, Inc." which starred the children and heirs of the JSA members.