H & H GUNS in warrenton exit 193 from I-70 you can find a treasure or 2 in there.
Franklin firearms in Troy mo. about 15 miles north of I-70 from wentzville has some nice stuff.
A must stop is Trail Creek in St. Ann near the airport in St louis. They've been shut down do to the 'rona but if open a great stop. Greg is the owner and extremely knowledgeable in classic firearms.
Stop in Crane's general store in Williamsburg. $2 sandwiches and a great place to browse and shop
hope this helps.