If I were a hero, I'd be Martin Luther (Part 4368).......

 Superhero Anydays

Don't now the artist, but this is some members of the Justice Society at the headquarters of the All-Star Squadron at the World's Fair grounds in NYC. 

In the air clockwise from top: Hawkman, Starman, Dr. Fate, Spectre

On the ground, left to right: Sandman, Sandy, Dr. Mid-Nite, Johnny Thunder, The Atom

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And today we also have a Hawkwoman cosplayer. 

POLT