The Ibsen A. (Ibsen Andreas) Nelsen papers are organized in accordance with the following series and sub-series arrangement:

Series I. Personal Papers, 1930-2001

Sub-series 1. Biographical Papers

Sub-series 2. Correspondence

Sub-series 3. Speeches and Writings

Sub-series 4. Community Activism

Sub-series 5. Financial Papers

Sub-series 6. Clippings and Publications

Series II. Professional Papers, 1951-2000

Sub-series 1. Architectural Projects

Sub-series 2. Administrative Records

Sub-series 3. Slide Documentation of Projects

Sub-series 4. Microfiche of Projects
Sub-series 5. Project Binders