This series documents Greek letter societies at SJSU, and includes materials such as Ero Sophian alumni books, Alpha Phi Omega announcements, an Omega Nu journal publication, a booklet celebrating Alpha Lambda Delta's fifty-year anniversary in 1974, Iota Sigma Phi correspondence, Episilon Phi Tau fraternity programs, a 1992 Theta Chi memory book and a plaque commemorating the founding of the Tao Delta Phi fraternity in 1916.