The Acadian Archives / Archives acadiennes is a repository for audio-visual documentation and manuscript materials relevant to the folklore and folklife of the Upper Saint John Valley and for original documents and copies of archival materials pertaining to the history of the region. Audio-visual documentation and manuscript materials include: textual records; maps, plans, drawings, diagrams; photographs, slides, films; paintings, pictorial and graphic works; microfilms, sound recordings, videotapes, and machine readable records.

The Archives also maintains a library of relevant reference books and other publications: rare or out-of-print books and publications, as well as reference tools which are required on a daily basis.