The Philomathean Society of Pacific University is a women's Greek Letter organization that was founded in 1871. The collection consists of the minutes of their meetings, 1871-1879, written by hand in a single volume.

Theta Nu Alpha is a Pacific University sorority which was founded in 1921. This collection includes newsletters, photographs, alumni records, a banquet invitation, and other material. Although the material all dates from the late 1940s through the early 1960s, information about earlier members is included in the Alumni Records section.