Developer's DescriptionBy CuratescapeProject DSM is a free app that explores the history of Des Moines.Project DSM is a free app that explores the history of Des Moines. Discover information on people, places, and events in Des Moines history. Explore historical information about each site on the interactive GPS-enabled map along with images from archival collections and historical publications. This project was developed by Des Moines Public Library.