Marine on St. Croix. Photograph by Monroe P. Killy, June 19, 1932.

Ruins of the mill operated by the Marine Lumber Company at Marine Mills (Marine on St. Croix) between 1839 and 1895, photographed ca. 1900.

The sawmill operated by Walker, Judd & Veazie at the town of Marine Mills (later renamed Marine on St. Croix), ca. 1880.

The sawmill operated by Walker, Judd & Veazie at the town of Marine Mills (later renamed Marine on St. Croix), ca. 1880.

The sawmill operated by Walker, Judd & Veazie at the town of Marine Mills (later renamed Marine on St. Croix), ca. 1882.

Fergus Falls Regional Treatment Center, formerly Fergus Falls State Hospital. Photograph by Wikimedia Commons user HRS, August 20, 2019. CC BY-SA 4.0

An aerial view of the reconstructed Snake River Fur Post in winter, ca. 1970.

Interior of a room in the reconstructed row house at the Snake River Fur Post in Pine City, Minnesota, 2010s.

Reconstructed row house at the Snake River Fur Post in Pine City, Minnesota, 2010s.

Archaeologists uncover the foundations of the original Snake River Fur Post, 1963.