Sigma Sigma Sigma
Potsdam first fraternal organization, Sigma Sigma Sigma, or Tri-Sigma, was started on November 29, 1932. It was short lived, however, as it only ran through 1943, when the organization disbanded due to the outbreak of World War II.
From there, Delta Kappa Theta was formed, a fraternity that still exists today. Check the "Delta Kappa Theta" tab for more information.