Theta Mu chapter was founded at Eastern Montana College (now Montana State University Billings) in Billings, Montana on November 23, 1985. The chapter closed on February 12, 1994.
This Second Century Campaign update newsletter lists campaign donors and includes an article about Mu (Simpson College) chapter alumnae supporting the restoration of a piano at Simpson College.
This brief article discusses the formal pledging ceremonies for the prospective chapter that would become Theta Mu (Eastern Montana College) and lists the charter members. A large photograph of Colony President Connie Fleege (Theta Mu, Eastern Montana College) and National Secretary Ruth Otting Tullis (Alpha Delta, University of Cincinnati) is included.