On sale date from Direct Currents.
Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (October 2007).
Credits for script, inks and letters confirmed from Julius Schwartz's editorial records, provided by DC Comics. Records show that Bob Kane was paid for the pencils, but scholars agree that pencils were actually by Springer. Letters previously credited to Gaspar Saladino.
Letters of comment from W. M. Neville, Ed Lahmann, Moira Maynard, Robert Kowalski and Peter Sanderson.
Letters of comment from Daniel J. Alderson, Edwin O. Bachman, Robert Pinaha; "Old King" Cole Bleckley, Dennis Palumbo, Mike Jones and Karen Cocklurn.
Thanks to John Ritter, Monroeville, PA.