Also designated on cover as 80 Page Giant (DC, 1964 series) #G24 and as G-24 on indicia page.
On-sale date from ad in All-American Men of War #116 and copyright registration.
Illustrated with details from Batman (DC, 1940 series) #85 [story], Detective Comics (DC, 1937 series) #218 [cover], #241 [story], and #281 [cover].
Inks credit verified by Paris.
Pencils credit verified by Sprang; inks credit verified by Paris.
Script credit from O'Hearn. Original title: "Batman--Clown of Crime!"