The papers of David T. Nelson relate exclusively to his position as chair of the Republican Central Committee in Winneshiek County, Iowa. Subject folders include campaign finances, lists of convention delegates, and political leaflets associated with the Republican Party in Iowa. There is also material concerning William Murray's campaign for governor and Winneshiek County's 1952 presidential convention. Correspondence files include letters from William S. Beardsley, Gerald R. Bogan, Thomas E. Martin, and Henry O. Talle. Both the Library of Congress and the Luther College Library have holdings relating to David Theodore Nelson. The majority of Nelson's papers are available at the Luther College Library.

Barth was candidatae for Controller of Currency in Iowa