Stock photography broker founded in 1976. Acquired by Jupitermedia in 2004 and subsumed into JupiterImages. JupiterImages was acquired by Getty Images in 2009. Getty Images now offers a Comstock Collection.
excerpt from company description:
Comstock Images has been in the stock imagery business since 1976 and possesses one of the largest archives of wholly owned commercial stock images in the world.
Art credit, Dime Stories: Grit and Gunfights on the Far Edge of the Galaxy