The first issue had the cover date of October 1972. The series was published on a quarterly schedule and only 18 issues were produced. The final issue appeared with a cover date of December 1976 and reprinted the first issue. Later on, a new story appeared in Gold Key Spotlight #6, in July 1977. Whitman would later publish a reprint issue, #19, in April, 1982. In fall of 2011, Dark Horse Comics started a hardcover archive reprint series.[citation needed] The first volume reprinted #1-9.[citation needed]