(1903-1994). Ruth Ella Moore was born in 1903 in Columbus, Ohio went on to become the first African American woman in the United States to earn a Ph.D. in the natural sciences. She received her B.S. and M.A. degrees from Ohio State University in 1926 and 1927, respectively. Ruth Moore performed her dissertation studies on tuberculosis at Ohio State University and received her Ph.D. in Bacteriology in 1933. During her years in graduate school Ruth Moore worked as an instructor at Tennessee State College (now Tennessee State University) in Nashville. Moore accepted a position at Howard University Medical College after earning her Ph.D. and worked her way to become Head of the Department of Bacteriology (1947-1958). Moore continued to teach and perform research at Howard University until her retirement in 1973. Professor Moore's area of research focused on blood grouping and enteriobacteriaceae. Ruth Ella Moore died in 1994 at the age of 91 in Rockville, MD.