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Measuring radioactivity, 1955

Measuring radioactivity, 1955

The counter room for measuring radioactivity. Two technicians, a man and a woman,are seated at the far end of the room; the woman is working with one of the machines. A number of pieces of equipment are shown.
Measuring lung capacity with a spirometer, The University of Iowa, ca. 1920

Measuring lung capacity with a spirometer, The University of Iowa, ca. 1920

Measuring lung capacity with a spirometer, The University of Iowa, ca. 1920

Measuring lung capacity with a spirometer, The University of Iowa, ca. 1920

Measuring height, The University of Iowa, 1920s

Measuring height, The University of Iowa, 1920s

Measuring height, The University of Iowa, 1920s

Measuring height, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s

Measuring growth, The University of Iowa, 1920s