The papers of Robert K. Goodwin date from 1866 to 1983 and primarily concern Goodwin's political activities. There are correspondence files with letters from many Republican politicians, including H.R. Gross, Bourke B. Hickenlooper, and Herbert Hoover. Some of the political subject files include presidential inaugurations, Herbert Hoover Birthplace Foundation, Republican state conventions, and H.R. Gross. There are also copies of speeches given by Goodwin, biographical materials, and photographs.