Series 6, Publications contains newsletters, mailers, and clippings produced by the Triangle Club.

Series 7, Triangle Alumni Papers consist of material collected by individual members of the Triangle Club, oral histories, and material realted to the history of the club by memebers.

Series 8, Recordings contains audio and video of Triangle performances. Throughout the years different recording methods were used including but not limited to: phonographic records, cassettes, CD, DVD, and digital recordings. Please refer to item level description notes for more information about the type of recording.

Series 9, Photographic Material contains contains photographs of Triangle Club members both on and off stage, in a variety of formats including glass plate negatives, cartes de viste, 35mm slides, and modern color prints, and digital images.

Series 10 contians posters and other large prints produced to promote Triangle Club performances.

Series 12, Memorabilia contains objects created to celebrate the Triangle Club and their performances.

The Princeton Triangle Club Public Website provides information on the activities of the university's oldest theatrical club, including a list of trustees, officers, and staff, and video clips of productions showing song and dance, sketches, kicklines, reunions, behind-the-scenes, vintage footage, and full-length videos of select shows. The site also includes information about ticket sales, merchandise, how to join the club, how to become a supporter, and links to social media.

These records represent a broad range of the ACLU's activities in the twentieth century.

This series includes digital copies of ACLU annual reports sent to Princeton by the ACLU. Far more copies of annual reports are available in other subgroups and interfiled within the collection.