This collection contains correspondences, Mildred's University of Idaho scrapbook, Jack's official military documents and related memorabilia and papers, family photographs, awards and certificates, as well as business and financial records. A majority of the correspondences are to and from Mildred and Jack during his time in the military. This collection also contains greeting cards sent to and from the Hayden's.

Mildred and Jack Hayden's diplomas from the University of Idaho.

Materials include a blank University of Idaho schedule card, a brochure, and the Pictorial Issue of the University of Idaho Bulletin, volume 37, May 1942, no. 4.

Jack Hayden's transcript from the University of Idaho.