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Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 3
Last Updated:: 2025-03-14

Description:: The image shows three boys and an instructor with McBurney tee-shirts forming a pyramid on a mat.
Created:: 1960?
Contributed By:: University of Minnesota Libraries, Kautz Family YMCA Archives.
Last Updated:: 2018-08-29

Description:: Flask. Glass flask in conical Erlenmeyer shape; neck contains cylindrical red rubber stopper. Includes manufacturer marking: "2000-ML -- MADE IN U.S.A." and "T.M. REG -- PYREX -- U.S. PAT OFF."
Contributor:: Corning Glass Works (Corning, New York)
Created:: 1920 - 1960?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 6
Last Updated:: 2025-03-14

Pyrex funnel

Description:: Funnel. Clear, thin glass funnel with pronounced, rounded rim and long stem cut at a diagonal. Includes manufacturer markings: "T.M. Reg. -- Pyrex -- U.S. Pat. Off. -- Made in U.S.A." Pyrex is made of borosilicate glass, or glass with added boron oxide, which strengthens the material against breakage due to temperature extremes.
Contributor:: Corning Inc (Corning, New York)
Created:: 1940 - 1950?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 4
Last Updated:: 2025-03-14

Description:: Beaker. Small cylindrical glass beaker with triangular spout at rim. Includes manufacturer markings: "T. M. REG. U.S. PAT. OFF. -- MADE IN U.S.A."PYREX -- 250 -- CORNING."
Contributor:: Corning Glass Works (Corning, New York)
Created:: 1920 - 1950?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 4
Last Updated:: 2025-03-14

Description:: Nursing bottle. Upright, six-sided molded clear glass bottle; one side contains 8 ounce graduated scale; attached rubber nipple. Includes manufacturer markings: "PYREX" and "58N -- T.M. REG. -- U.S. PAT. --OFF. -- 9." The Pyrex brand of cookware was invented when Jessie Littleton, the wife of an engineer at Corning Glass Works, collaborated with...
Contributor:: Corning Inc, Corning, New York (Manufacturer)
Created:: 1922 - 1945?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 3
Last Updated:: 2025-03-14

Description:: Nursing bottle. Upright, six-sided molded clear glass bottle; one side contains 4 ounce graduated scale; attached rubber nipple and cap. Includes manufacturer markings: "PYREX" and "44-W -- T.M. REG. -- U.S. PAT. --OFF. -- 7." The Pyrex brand of cookware was invented when Jessie Littleton, the wife of an engineer at Corning Glass Works, collabor...
Contributor:: Corning Inc, Corning, New York (Manufacturer)
Created:: 1922 - 1945?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 4
Last Updated:: 2025-03-14

Description:: Culture flask. Wide, round glass flask that slopes up to a tin, cylindrical neck and beaded rim; 2500 mililiter capacity. Includes manufacturer markings: "2500-ML -- MADE IN U.S.A." and "T.M. REG -- PYREX -- U.S. PAT OFF."
Contributor:: Corning Glass Works (Corning, New York)
Created:: 1920 - 1960?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 5
Last Updated:: 2025-03-14

Description:: Cylinder. Clear glass cylinder with flat, hexagonal base and graduated scale from 200 to 1800 milliliters; slightly raised rim. Includes manufacturer markings: "Made in U.S.A." and "PYREX Ⓡ."
Contributor:: Corning Glass Works (Corning, New York)
Created:: 1950 - 1980?
Contributed By:: University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.
Page Count:: 7
Last Updated:: 2025-03-14