Milwaukee Manuscripts 186 contains original diaries kept by Buttles from 1856 to 1906 as well as typed diary excerpts, scattered correspondence from 1851 to 1857, and genealogical material on the Buttles and Stoughton families.
Milwaukee Micro 75/Micro 161 contains microfilmed copies of papers from 1846 to 1857. These include letters from Paul Juneau and Byron Kilbourn, and letters Buttles wrote to his wife while he served as an engineer during the construction of the Milwaukee & Mississippi Railroad, and the Milwaukee & La Crosse Railroad.
Milwaukee Micro 76/Micro 2068 contains copies of the diaries written by Buttles from 1856 to 1906. Also included are recipes, formulas, marriage records, and a catalogue of curiosities and specimens.
