Howdy Ira, welcome to the board!
I found 14 recommendations for places in St. Louis in the "Best BBQ Joint" forum.
The easiest way to find them is by using the "SEARCH" feature in the menu at the top of the page. Use these parameters.
Search for Keywords: "LOUIS"
Forum: "Best BBQ Joint"
Display results as: "Posts"
Return first "1000" characters of posts
And leave everything else default.
We also have a few members from the area, maybe they'll see this in time. Hope to see you around and have a great time in ole' St. Louis.