The University of Nebraska Mortar Board became a member of the national Pi Sigma Alpha-Mortar Board in 1921. The University Kosmet Klub also entered the festivities and initiated their first honorary member that year. In 1923, the Kosmet Klub began the Fraternity Ivy Day Sing. At this time the Prince of the Kosmet Klub and May Queen planted a spring of ivy together, reminiscent of the academic song, “Halls of Ivy”.