Pencils and inks credits confirmed from Julius Schwartz' editorial records, provided by DC Comics. These records also list Ross Andru, but his contribution is unclear. The layouts credit is an educated guess based on the data available. Letters credit from http://kleinletters.com/.
Credits for script, pencils and Hunt inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Klein credit from http://kleinletters.com/.
Part 2.