1953 District List & 1955 Corresponding Map
The oldest MTC district list I have been able to dig up is from the 1953 Scouting Exposition program. A list containing the same districts appeared in the 1954 Scout Circus program and is pictured below. The districts on that list which still exist today are Davy Crockett, Walton Trail, Cogioba, Highland Rim, Upper Cumberland and Hermitage. Below is also an image of a district map from 1955 which shows all of the districts listed in those 1953 & 1954 lists. It also shows another district in the SW corner of the council whose name unfortunately is cut off of the picture. In the 1959 map, this is Buffalo River District and it probably was at that time as well. Or perhaps it was not yet part of the council in 1955 (the image does not show the area that would have been the council boundary were that part of the council at that time. Anyway, it's a mystery for now why Buffalo River is not on the 1953 & 1954 lists but the area that by 1959 was Buffalo River is not covered by the listed districts.