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.

This folder contains materials Mildred kept including a land deed, an estate record, H. R. 16343, and a correspondence.

This folder contains materials kept by Mildred featuring the surname Finch. It includes government documents about James H. Finch who served with Captain Emmett Wilson's Company of Oregon Volunteers in the Bannock Indian War of 1878.

This folder contains materials with the surname King. It includes identification cards, registration cards, insurnace policies, tax docuemnts, mortgage papers, and correpsondences.