An accomplished mathematician, Eunice Gray Smith was among the first African American women hired to work at the Langley Memorial Aeronautical Laboratory (LMAL) in Hampton, Virginia during the 1940s. Over the course of a forty-year career at the laboratory and research center, which is part of National Aeronautics … Read MoreEunice Gray Smith (1923-2006)
A prominent thoracic surgeon in Philadelphia, Pennsylvania, Dr. Frederick Douglass Stubbs made important contributions to the treatment of pulmonary tuberculosis. He completed extensive training in thoracic (chest) medicine during and after medical school, including a yearlong residency at Sea View Hospital in Staten Island, New York, that concentrated on … Read MoreFrederick D. Stubbs (1906-1947)
During the late nineteenth and the early twentieth century, Philip Bell Downing successfully filed at least five patents with the United States Patent Office. Among his most significant inventions were a street letter box (U.S. Patent numbers 462,092 and 462,093) and a mechanical device for operating street … Read MorePhilip B. Downing (1857-1934)
