Thirty-three collegiate and 14 alumnae members of the 67-year-old local sorority Alpha Beta Zeta became Gamma Mu's charter members in 1949. Alpha Delta Pi was the first full member of NPC to be installed on campus. Gamma Mu has an outstanding scholarship record. The chapter house was in the historic district of Springfield from the 1960s until 1994 when the chapter dedicated their new 15,000 square foot home featuring a blue and white terrazzo floor inlaid with Greek letters and housing 59 collegians. Gamma Mu has received the Golden Lion Award four times. Gracia Yancey Backer served as the highest-ranking woman leader in the history of the Missouri House of Representatives as Assistant Majority Floor Leader. Province Director Linda Parrish Broshears has served the chapter in many ways for many years.