Until further notice, the University of Minnesota Libraries Archives and Special Collections are open by appointment only and appointments are limited to UMN affiliates. Appointments must be made one week in advance of your visit to enable us to page and quarantine collection materials before use.

Please contact ascref@umn.edu for assistance or, if known, the curator of the collecting area you wish to use. We will continue to provide scans of requested research materials whenever possible, especially for our non-campus clientele.


Questions? Ask us!

Rachel Mattson
Curator, Tretter Collection
email: rmattson@umn.edu
phone: 612-624-7526

Office: Elmer L. Andersen Library Suite
222 - 21st Avenue South
Minneapolis, MN 55455
Hours: Mon - Fri 8:30am - 4:30pm

Please note: Due to limited resources, we cannot accommodate walk-in researchers. If you would like to view materials from the collection, please make an appointment by emailing the curator. (We ask that you email us at least 3 business days in advance of your visit.)