I did not see a forum for WTB posts. First, I was on this page:
https://www.cgccomics.com/boards/forum/63-comics-market-forum-only-selling-area/
At the top, it says, " A forum for direct selling offers to other board members without an intermediary (no ebay, or other outside sites, etc.), and for Want To Buy posts." Since there is no sub-forum dedicated to WTB on that page, I figured my post should go in the sub-forum related to the time period of the books I am needing. If you have a link to the WTB forum, I will be happy to post there instead.