Sam, King Arthur Flour website has a what looks to be a great recipe that I've been eyeing for the past couple of days ( it is hotter than hades right now so I can't even contemplate turning on the oven). And it sounds like the real deal Chicago-style deep dish pizza.

I have the recipe for the Original Uno's deep dish pizza. Have made it several times, and having grown up in Chicago, I can attest it's authentic. message me if you'd like that recipe. It's copyright, so I can't post it, but I can email it to you...

Sam, first of all good luck in your quest. But while I adore the city of Chicago I still can't get used to "deep dish" as it's more of a casserole than a pizza. It does have a little in common with the Italian "pizza rustica" which is traditional at Easter and includes a ton of eggs and ham.

Hi Sam, did you check out Emerils recipe on FN: http://www.foodnetwork...

Consider a "Detroit Style" pizza Sam...deep dish and the pepperoni goes on the dough followed by cheese and other toppings, a little more cheese and sauce on top. Here's a relatively recent article from the Detroit Free Press:
http://www.freep.com/article...

Sam - time for a trip to Chicago and chat with some pizza guys. I still prefer the thin crust - simply because I don't fill up so quickly and can eat more ! But your venture into the land of deep means you can load up with meat and cheese, then add some more ! Bon appetite

Zachary's in Berkeley (CA) made the most divine deep-dish spinach pizza. Between the births of our son and daughter, I have extremely fond memories of our go-to Friday night dinner. http://www.zacharys.com...
I have no idea if this helps you in a practical sense, but I have greatly enjoyed the idea of recreating it.

Last night I made, for the first time, one of KAF's deep dish pizza recipes -- perhaps the one that HalfPint was eyeing. I can't say that it tasted exactly like Gino's or Malnatti's, but it was very good. And, it's definitely a nice change from, as you called it, "normal pizza." Here's a link: http://www.kingarthurflour....

America's Test Kitchen did a show on Deep Dish Pizza.
The trick was to 'laminate' the dough with layers of butter.
https://www.youtube.com...