Miners—many of them probably northern European immigrants—in the pit of the Soudan mine, Tower, 1890.

Sample card of glass seed beads sold at the Mille Lacs Indian Trading Post between 1920 and 1959.

Items for sale and trade inside Mille Lacs Trading Post, ca. 1935.

Items for sale and trade inside Mille Lacs Trading Post, ca. 1935.

Items for sale and trade inside Mille Lacs Trading Post, ca. 1935.

Boat works at Mille Lacs Trading Post, Mille Lacs Lake, March 1931. Boat works at Mille Lacs Indian Reservation, 1931.

Aerial view of Mille Lacs Trading Post at Vineland Bay, Mille Lacs Lake, circa 1930

O-gee-tup standing with Harry and Jeanette Ayer at Mille Lacs Trading Post, ca. 1920.

Mille Lacs Trading Post, ca. 1920

Mille Lacs Trading Post, ca. 1920.