Fonds consists of personal correspondence, newspaper clippings and manuscripts; as well as, memorial tributes, cards and letters of sympathy pertaining to the passing of Sonthoff. The fonds is arranged in the following series: Correspondence, Essays and Criticisms and Memorial Tributes.

Fonds consists almost entirely of materials created or acquired by Gordon Elliott throughout his life and career and includes:
• The manuscripts for his historical writing.
• Research materials.
• Personal correspondence.
• University notes and lectures.
• Newspaper clippings.
• Public lectures.
• An audio recording.

The fonds includes the following series: correspondence, theses, speeches, lecture notes, printed materials, clippings, photographs, student memorabilia and manuscripts. Photographs are stored separately.

Fonds consists of correspondence, photographs, clippings, artifacts, publications, legal documents, notes, transcripts of lectures and broadcasts, examinations, certificates, and other miscellaneous items. Most of the material was created and collected by Sedgewick himself and a small amount was collected by friends including Robert apRoberts after Sedgewick's death.