I happened to overhear this from another forum. I thought it was interesting. I might run by TAP architecture and check it out for myself. I'll let you guys know what I find out.

"However, I will tell you this interesting little nugget of information. On Broadway and about 4th St is the headquarters of TAP Architecture. They have a scale model of downtown OKC with the various taller buildings about 3 to 4 feet tall, like the First National Tower and the Oklahoma Tower. Well, there are two skyscrapers on the model which don't exist. One is quite a bit taller than the First National Tower which would make it the tallest building downtown. So, maybe there are others in the works that TAP architecture knows about and we don't. By the way, you can stop by and peek in the windows to see the scale model I'm talking about."