Beatrice Aitchison, American mathematician, statistician, and transportation economist (d. 1997)
Beatrice Aitchison (July 18, 1908 – September 22, 1997) was an American mathematician, statistician, and transportation economist who directed the Transport Economics Division of the United States Department of Commerce, and later became the top woman in the United States Postal Service and the first policy-level appointee there.