I haven't been to Cozad since the Spring of 2011. I wouldn't be surprised if they are no longer offering photography at this range based upon a few things the owner said at the time.
Doug I'm not sure if Cozad is still in business, but there are a few other ranches in the area set-up for photography. I have 1 spot left on my south Texas tour in May. If you really want Cozad try Ruth Hoyt at www.ruthhoyt.com as she was guiding for this ranch.