The Southern Monon Conference was an IHSAA-sanctioned conference in Southern Indiana. The conference was named after the two railroad lines the four founding schools were located along: the Southern (Milltown) and Monon (Borden, Campbellsburg, and Pekin). The conference doubled in size in its second year, yet had a large amount of turnover in its existence,[1] The conference ended in 1965, when it merged with the Dixie Athletic Conference to form the Dixie-Monon Conference (Milltown left the league in 1959, ending the presence of the Southern Railroad its footprint).