This issue has variants.
On-sale date from Comic Reader #161.
Color credits provided by Anthony Tollin.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Letters of comment from Alfalfa Astor, Cat Yronwode and John Hebert.
Information on Superboy and the Legion of Super-Heroes #247, The Brave and the Bold #146, comics on sale the week of October 23, Ask the Answer Man! and Hembeck strip featuring Elongated Man.