There are folks looking for CBC's, failing to find a list of circles and contact people. This website sounds like the place, but if it's there, I can't find it.
If you are the compiler for a count in Missouri (or neighboring states), please post the dates and locations and contact info.
CBC's are often an entry activity for would-be birders. My first birding activity was a Christmas count at Boy Scout Camp Naish in Kansas. The high that day was 11 F. That it was so much fun defies logic.