Browse Items (1 total) Tags: Opal Riddle Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Opal Riddle - Millikin University Senior, Zeta Tau Alpha These are the glass negatives of Opal Riddle, a Millikin University Senior, and a member of the Zeta Tau Alpha women's fraternity. The photos were taken by Charles Wasson of Wasson Studios in Decatur, IL in the early 1900s. Tags: c. 1910, cap & gown, Charles Wasson, Charles Wasson Photo Collection, Decatur IL, Fraternity, Glass Negative, graduation, Millikin University, negative, Opal Riddle, Senior, student, Wasson Studios, woman, women's fraternity, Zeta Tau Alpha Featured Item Clyde Beatty Circus Photograph of the Clyde Beatty Circus in August of 1943 showing a crowd of people looking at tigers.