Golden Age Heroes by Disbrow

I remember reading a book by Disbrow when I was younger and always wanted some of his art when I started collecting.  I never  had any luck winning any auctions for his work though.  This wonderful piece popped up last year so I put a little more effort in than usual and won it at auction.  I don't think that it's published but I really liked the looks of it.  How could you not like a drawing with Superman, the Sub-Mariner, Captain Marvel, the Human Torch, Batman, Captain America, the Spectre, and Sheena.  I have no idea who the floating head is supposed to be.  Disbrow wrote at the bottom of the page in pencil, "They sprang from hundreds of millions of newsprint pages, straight into the heart of America. The heroes and heroines of the adventure comics have long since ingratiated themselves into the cultural pattern of this nation."  I'm really proud to own this piece even if my scan makes it a little darker than it should be.