But, this issue is very significant for Batman's history and the whole of the DC Universe as well!
Batman And Robin Visit The 1940 New York World's Fair
This issue also features separate stories of Superman, Slam Bradley, Zatara, Hourman, Sandman, Johnny Thunder and more, who also attend the fair, though none of these heroes seem to meet each other....but, this cover is the first time Superman and Batman share the spotlight!
But, where was Batman?
Well, he was just premiering in Detective Comics #27 (May, 1939) by Bill Finger and Bob Kane.
After The FairCrimson Avenger, Johnny Thunder, the King and more. This title turned into World's Finest Comics with its second issue in Summer of 1941, and eventually became a title that featured team-ups of Superman and Batman, after the two characters had a few first meetings!
All-Star Squadron (including an issue where Batman faced off against Oom of Mr. Mind's Monster Society of Evil).