Mr. Staebell can!
This is the author even if I don't look it. I haven't yet asked for the keys to the car, as it were, in regards to forum-hopping via the same profile that posts these articles.
[edit] Ask and ye shall receive! Vroom, vroom.
First off, thanks for the feedback! I knew The Escapist editors were taking a bit of a gamble by posting something so dense with anachronisms you could submit it to a museum, and I'm glad people enjoyed it despite the apparent encryption.
Those of you who understood it in it's entirety (I'm looking at you, The Rogue Wolf) - congratulations! If you were somehow to fall into a rift in time and space that warped you to 1930s America, you'd be sitting pretty! (Except for whole "GREAT DEPRESSION" thing. Good luck with that!)
For anybody who isn't burdened with a vocabulary pretty much nobody uses anymore:
http://www.paper-dragon.com/1939/slang.html
http://www.alphadictionary.com/slang/
http://www.miskatonic.org/slang.html
http://home.earthlink.net/~dlarkins/slang-pg.htm
These sites went a long way in getting the article off of the ground, though I mostly used them to confirm the slang I wanted wasn't out of place. (Did you know "the fuzz"[police] is a 1960s term? Almost put it in anyway!)
Beyond vocabulary, I would encourage anybody who only half got it to give it a second read-through, particularly after reading Grand Marquis' comment. All the tools you need are here, all that's missing is some moxie! Gumption will also suffice.
Now that you have me singing like a canary, this cat's gonna scram before the fuzz throws me back in the slammer!