The Black Age of Comics was written about in the Comics Journal #160 along with tributes and interviews with some of the most innovative artists and writers creating the fire in the movement. This issue is so hard to find today. If you really want to get up on the history of the Black Age you need to contact Fantagraphics Publishing to secure this crucial back issue.
Plus you should check out the East Coast Black Age of Comics Convention in May in Philadelphia or the The Annual Black Age of Comics Convention in Feb. in Chicago. This blog encourages your responses and particpation.