The Holder collection is divided into three basic series. The first deals with his work for the Taft Highway Association. This series includes correspondence, records of the association and newspaper clippings. The second series relates records of the Association and newspaper clippings. The second series relates to Holder's position with the Michigan State Highway Department during World War II. This material contains records of bus line surveys as well as gasoline and tire rationing programs implemented in World War II. The final series is related to Holder's personal activities. This series includes correspondence from 1946-1957, account books, address books and magazines commemorating Fielding H. Yost's retirement from the University of Michigan in 1942.