The couple resided at Hope, North Dakota, where Mrs. Gumb was active in the Women's Club, Library, American Legion Auxiliary, Hope Community Club and local government. In later years, Katherine became interested in the history of Steele County and did research and writing with the hopes of publishing a county history, a goal which was never attained. The Gumb collection consists of her manuscripts on Steele County history, plus records of the 0ld Settlers Association of Griggs and Steele Counties, North Dakota. The Steele County history manuscripts are organized into the general material on Steele County, individual townships, cities, and several biographical sketches. For each folder, there is a typed copy of most of the manuscript material.
Many files also contain biographical sketches of early settlers.
The Louis B. Hanna file includes correspondence with Mrs. Gumb, newspaper clippings, and Mrs. Gumb's biography manuscript.