An ox-cart train on a Red River trail, ca. 1860.

Métis drivers with Red River ox carts, probably in Minnesota, 1860. Photograph by Benjamin Franklin Upton.

A camp with Red River carts, ca. 1860.

A man and a Red River cart train, ca. 1859. Photograph by Martin’s Gallery.

An unidentified Métis fur trader of Native American and French ancestry, ca. 1870.

Antoine Blanc Gingras, Métis fur trader and member of the Minnesota Territorial Legislature, ca. 1855.

Two men, probably Métis, preparing a Red River cart train at Pembina, 1856.

Ecolab buildings, St. Paul, July 2017. In the foreground, the new Ecolab headquarters in downtown St. Paul. Behind can be seen the old tower on Wabasha, still bearing the Ecolab name.

Ecolab building, 2014. Photograph by Wikimedia Commons user McGhiever.

Economics Laboratory, 293 Como Avenue, St. Paul, October 8, 1962.