The Iowa Department of Transportation's Historics Archives Digital Collections is a compilation of transportation-related photos, maps and other documents gathered by Iowa DOT employees or donated to the department. It is one of the few digital collections of historical transportation artifacts in the country.
The collection spans a wide range of subject areas and examines all modes of transportation. Approximately 13,400 images are currently available and additional photos and updates are made frequently. Many of the images are one-of-a-kind or rare.