Throughout his long career, artist Arthur Pinajian created thousands of vivid, abstract canvases, including landscapes, figure studies, and expressionist works. He received little recognition during his lifetime and worked mostly in obscurity. Now, however, he is gaining improbable posthumous fame with leading art historians saying that, at his best, he ranks among America's finest abstract expressionists. His estate is currently valued at $30 million. (13 PHOTOS)