Ira Schnapp letterer credit via Todd Klein through a post from his blog Kleinletters, 16 October 2016 (retrieved 19 November 2016, http://kleinletters.com/Blog/star-spangled-schnapp/).
Writer credit from index of The Greatest 1950s Stories Ever Told (DC, 1990 series).
Ira Schnapp letterer credit via Todd Klein through a post from his blog Kleinletters, 16 October 2016 (retrieved 19 November 2016, http://kleinletters.com/Blog/star-spangled-schnapp/).
Writer credit from textual analysis by Lou Mougin.
Ira Schnapp letterer credit via Todd Klein through a post from his blog Kleinletters, 16 October 2016 (retrieved 19 November 2016, http://kleinletters.com/Blog/star-spangled-schnapp/).
Inside back cover.