Chuck Tryon's book about Trout Fishing in Missouri is considered to be the local bible. It costs less than $20 and is well worth the price for its discussion on trout fishing in Missouri in general including fly patterns to use.
I can't remember all the rec's but I do remember that the Tellico Nymph, Wooly Bugger, and Elk Hair Caddis were suggested.
I haven't fished for a number of years but used to do well with small leadhead marabou jigs particularly black/yellow and black/olive color combos. Not quite what a purist would use but very effective in 1/64th ounce on down.