Students in a science class at Villa Maria Academy in Frontenac (Goodhue County), between 1943 and 1944.

Surgical clamp designed by Owen Wangensteen, chief of surgery at the University of Minnesota and used by Dr. Palmer Peterson in his Minneapolis medical practice from 1952 until 1998.

Medtronic pacemaker, built by Medtronic, Inc., ca. 1957 and 1958.

A researcher working with a radiation detector in a laboratory of the University of Minnesota’s College of Science and Engineering, ca. 1960. The researcher depicted is investigating the behavior of cosmic rays.

A worker inside Honeywell Corporation. Photograph by Olof Kallstrom for the Minnesota Geographic Society, 1978. Forms part of the Olof Kallstrom series of photographs from the Minnesota Historical Society’s City of Minneapolis documentary photography collection.

Computer used for weather calculations, air traffic control, etc., designed and manufactured by Control Data Corporation, Minneapolis, 1970. Photograph by Control Data Corporation.

A Science Museum of Minnesota scientist tracks a turtle at a pond. Photograph by Jeffrey Grosscup, ca. 1980s. Forms part of the Jeffrey Grosscup photograph collection at the Minnesota Historical Society.

A 3M hazardous material disposal team at work in Woodbury, 1991. Forms part of the Jeffrey Grosscup photograph collection at the Minnesota Historical Society.

Laboratory at the University of Minnesota’s Mines Experiment Station. Photograph by Jerry Mathaiason for the Historic American Buildings Survey, 1997. Public domain.