The following cards were being given out at the show.

Collecting Superman show EXCLUSIVE Superman Lunchbox promo card (mentioned in other NSU posts so I didn't take a scan of it)

Wizard of Oz Pinball. Photo of front and back of card shown below. Not exclusive to the show, but still a trading card promo from Pinball Star to promote the Wizard of Oz Pinball machine.

Realm of the Underworld. Not exclusive to the show. There are 4 of these cards but the company only brought cards 1, 2 and 4 with them to the show. Photos of the front and back shown below.

The Email. Not exclusive to the show and mentioned in a few other spots on the NSU forum. Cards 1, 2 and 3 were at the show.

Early on Friday I also saw a Wrapper Exclusive Wacky Packages promo postcard. Not sure if that was limited or not supposed to be given out but when I went back to the promo table none were there.

On the Realm of the Underworld, I contacted the company and they said, yes, the 4 cards which represent the 4 action figures that currently are available DO exist. There is also a 5th card for one of the figures in the upcoming Series 2 line of figures, and MORE cards on the way !

Tommy, according to Facebook, Realm of the Underworld will have promos at the Maryland Collectors Con on May 11.

Let me correct what I said above. So far, there are only 4 cards, not 5

The one missing from Laura's scan above is #3, Archfiend, a skeleton. There is one card for each of the 4 action figures