This collection is composed of materials produced and collection by the 125th Anniversary Planning Committee. Folders include minutes, clippings, event invitations and programs, publications, photographs, audio-visual material, departmental histories, and memorabilia.

The Cooperative Extension Service celebration material is composed of material from several South Dakota County Extension offices and related what each county did to celebrate the 125th anniversary of South Dakota State University. Folders may contain photographs, clippings and other material documenting the event.

The audio-visual material is composed of master and finished product video footage in the form of videos and DVDs for the 125th anniversary celebration projects. Included with the material are taped interviews of prominent individuals, such as United States Senators and Representatives. Also included are some scripts.

Colleges, departments and faculty were to submit recommendations for a summary of important dates, events and people in the history of South Dakota State University. They were asked for focus on accomplishments since 1964 when the institution was granted university status. These are found in the material marked as Survey of Accomplishments.

Other material of interest includes a resolution proposed by the South Dakota Legislative Assembly, and memorabilia associated with the celebration, such as a replica of the Coughlin Campanile that includes a piece limestone from the original structure.