Here's a scan of the advertisement that ran in all the Valiant books explaining the then upcoming UNITY crossover and how Valiant were going to give away the first part (Unity #0) for free. Check out the cool UNITY artwork by David Lapham and Bob Layton. To my knowledge it has never been published anywhere else. Lapham does such iconic versions of the Valiant characters. I love his Shadowman and Sting!