The steamboat Bertrand, carrying cargo up the Missouri River to Virginia City, Montana Territory, sank on April 1, 1865, after hitting a snag in the river north of Omaha, Nebraska. Half of its cargo was recovered 100 years later. Today, the artifacts are displayed in a museum at the DeSoto National Wildlife Refuge near Missouri Valley, Iowa. The display makes up the largest intact collection of Civil War-era artifacts in the United States.