In a Facebook post about Action #1000, Paul Levitz stated that this issue was his first editorial job, picking out a reprint for this issue while Allan Asherman was out with the flu.
On-sale date from copyright registration. On-sale date of April 28 in Comic Reader #95 is a typo.
Story in four parts of 4.67, 5.67, 6, and 7 pages. The original splash page is removed and the original second page modified to act as the beginning of the story for this reprint.