I came across some great images of old OKC, but I'm not sure what forum category would make sense to post them under. This one seems the most logical, although the photos are WAY too old be considered nostalgia or memories of anyone on this site (likely anyone alive).

A user named Kewpie has been posting old theater pics on the Cinema Treasures web site. Many, though not all, of the images are of Oklahoma City. Here's a few samples:

Palace Recreation Cinema, 311 N Broadway (early 1940's?)


Empress Theatre, 111 W Main (circa 1926)


Liberty Theater, 19 N Robinson (circa 1925)


Belle Isle Airdome, 1901 NW Expressway (about 1920?)


Many more images found here:
http://cinematreasures.org/members/cupie/photos