Grand Portage National Monument houses over one hundred thousand museum objects. These range from archeological artifacts excavated from fur trade sites such as Fort Charlotte on the Pigeon River and the North West Company depot at Grand Portage to thousands of historical photos, maps, and papers. A major focus of the collection is native Anishinaabe artwork and everyday objects. Another part of the collection includes geological and biological specimens from park natural resource researchers.
The collection is important for the study of the Great Lakes fur trade and for understanding the culture and history of the Grand Portage Anishinaabe people. It also preserves specimens to support research on the area's plants, animals, and environment.
Part of the collection is on exhibit at the Monument, both in the Heritage Center gallery as well as in the reconstructed buildings of the historic North West Company depot. However, because only a small part of the collection may be exhibited at one time, the park is working to develop a Web catalog of interesting collection items.