The Carl P. Dietz Collection of business machines currently numbers approximately 1,200 machines of which 900 are typewriters. The collection reflects the diversity of typewriter manufacturers and the development of machines from the 1870s to the late 1980s. The Dietz Collection holds Museum-made models of the earliest typewriters designed by Christopher Latham Sholes, post-1873 Remington production models, and many seminal typewriters of the late 19th and early 20th centuries.
The painted Blackfeet elk skin robe in the Museum's collection came from Montana and is believed to have been painted by Mike Left Arm, showing his own exploits. The paintings depict primarily horse stealing scenes. Horses were important to the Blackfeet way of life, and it was a great achievement to acquire them through theft.