Letterer credit by Martin O'Hearn and Joe Desris.
On-sale date from ad in Challengers of the Unknown #26 and copyright registration.

Writer credit by Martin O'Hearn from http://martinohearn.blogspot.com/. Art credits verified by Mooney.
Published in cooperation with the National Social Welfare Assembly.
| Script: | Henry Boltinoff (signed) |
| Pencils: | Henry Boltinoff (signed) |
| Inks: | Henry Boltinoff (signed) |
| Colors: | ? |
| Letters: |

in Superman et Batman et Robin (Sage - Sagédition, 1969 series) #19 (juillet 1970) [Alternance de noir et blanc et de couleurs [Color pages alternate with black and white pages]]Script credit by Martin O'Hearn from http://martinohearn.blogspot.com/. Inker credit verified by Paris.
Story contains two separate giant prop sequences!

Prints a letter from Tom Fagan of Rutland, Vermont about the Rutland Halloween Parade and its Batman float.

in Superman et Batman et Robin (Sage - Sagédition, 1969 series) #17 (mai 1970) [Alternance de noir et blanc et de couleurs [Color pages alternate with black and white pages]]
in Caped Crusader Classics! (Titan, 1988 series) #5 - Return of the Joker (August 1989)
in Batman in the Sixties (DC, 1999 series) (March 1999)Inker credit verified by Paris. This story was parodied by author Donald Barthelme in his prose story "The Joker's Greatest Triumph," published in the Barthelme collection Come Back, Dr. Caligari (Little, Brown and Company, 1964).