On sale date from the publication date found in the Catalog of Copyright Entries, Third Series, Volume 15, Part 2, Number 1, Periodicals, January-June 1961. Second class permit. Copyright number B899515.
"Superman's Greatest Feats" actually appears in that month's Superman #146.
Inside front cover.
Inker credit confirmed by Pat Lang. Inker credit previously given to George Klein (as per Gene Reed) or Stan Kaye.
Job number appears on original printing but not on this printing.
Includes letters from Douglas Dowdy, Jimmy Longgardner, Steven Sussman, Viola M. Schrader, Joseph Blitman, Leon Wieseltier, MIke Hyatt, Darla Middbrook.