This collection is ordered based on the various stages of Jeppsen’s career and is primarily composed of communications with friends or professional associates. Correspondence, whether personal or professional, was broken up and placed under the heading for which it is most temporally relevant. Letters dealing with specific projects were identified as such, while more general correspondence was labelled “miscellaneous correspondence” and ordered chronologically.

Documents from Jeppsen’s employment with the Institute for Inter-American Affairs and the Technical Cooperation Administration have been placed into their own specific categories due to the variety and quantity of material in each category.