I'd been pitching an idea to DC for years where we'd take all the magical characters that were running around before the dawn of superheroes and do a story that was their last big adventure before the 'guys in capes' came along. I thought of it as a companion piece to James Robinson and Paul Smith's excellent THE GOLDEN AGE. I of course had to call it THE MAGIC AGE. Since it was a period piece (set in the late 1930s) with a bunch of characters that had mostly migrated over to the Vertigo line, the project never really gained any traction.
At some point, I decided to try and do the same idea but with my own characters, much like Alan Moore had done with the old Charlton characters and WATCHMEN. Needless to say, I'm no Alan Moore, and while the concept still held some interest for me, the story lost some of its emotional punch without Doctor Occult, the Spectre, and all the rest.
I began work on a preview story with my own characters and got so far as actually starting on some of the art before realizing it wasn't quite coming together for me. The above is one of two surviving pages-in-progress. Never inked the backgrounds, but I'd already put a lot of work into the figures.
Years later, I salvaged some of the characters for a book at Crossgen, which would (after Crossgen folded) become the TWILIGHT & FENCHURCH story I've already posted a few pages from.
These ideas just get stuck in my head and never let go. I'll do a 1930s supernatural heroes book at some point. And I suspect whatever form it takes, the basic idea will have originated in this old MAGIC AGE story.