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Johann Gregor Mendel (1822–1884)

By Sarah Walls

Johann Gregor Mendel studied patterns of trait inheritance in plants during the nineteenth century. Mendel, an Augustinian monk, conducted experiments on pea plants at St. Thomas’ Abbey in what is now Brno, Czech Republic. Twentieth century scientists used Mendel’s recorded observations to create theories about genetics.

Format: Graphics

Subject: People

Virginia Apgar (1909–1974)

By Anna Guerrero

During the mid-twentieth century, Virginia Apgar worked as an obstetrical anesthesiologist and gave drugs to women that reduced their pain during childbirth in the US. In 1953, Apgar created a scoring system, called the Apgar score, that uses five measurements, including heart rate and breathing rate. The Apgar score evaluates newborn infants and determines who needs immediate medical attention. Apgar's work helped decrease infant mortality rates. As of 2020, hospitals around the world use the Apgar score.

Format: Graphics

Subject: People

Dr. Sturtevant Collecting

By Alfred F. (Alfred Francis) Huettner, b. 1884

Format: Photographs

Subject: Places, People

Joseph Dixon

Format: Photographs

Subject: People

G Dallas Hanna

Format: Photographs

Subject: People

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