On-sale date from copyright registration.
Inside front cover.
Writer credit by Martin O'Hearn. First issue not signed by Harry G. Peter?
art credits by Jerry Bails
data from Jerry Bails
Data from Jerry Bails and Bob Hughes. R. Gary Land argued that this was not Emil Gershwin's work, but Gene Reed confirmed it as Gershwin, with the difference in the artwork being due to it being inked by Bernard Sachs and not by Gershwin.
Inside back cover.