This portrait was seen in the recent episode of Smallville.
And because I can,
The 15 heroes in the portrait, left to right, are: Star-Spangled Kid, Wildcat, the Atom, Sandman, the Spectre, the Flash (Jay Gerrick), Hawkman, Hawkgirl, Dr. Fate, Green Lantern (Alan Scott), Hourman (Kent Nelson), Dr. Mid-Nite (with Hootie the owl), the original Black Canary, and Mr. Terrific
There… got THAT off my chest