The Sigma chapter (#18) at Ohio Northern University was re-installed May 7, 1949 with Robert Woll & Karl A. Roider serving as installing officers. Charter members of the Sigma chapter include: Max Beck, Jack Carey, Jesse Claypool, James Ewing, Harry Folk, J. Robert Gamble, William Rhoades, John Ritonen, Jack Rolfes, Harry Thompson, and Russell Willeke.
