This project seeks to include the historical significance of women in the Foreign Service and subsequently the United States Department of State between 1942 and 1964. Using the life and experience of Margaret Parx Hays, one of fewer than three hundred female foreign service officers before 1960, this study explores the importance of examining women at the "ground level." This narrative examines the life of Hays at several different duty stations and her experience navigating a male-dominant workplace congruent to the political and diplomatic missions of each stations. Hays was stationed in Buenos Aires, Argentina (1942-1945); Bogota, Columbia (1945-1947); Rio de Janeiro, Brazil (1948-1950); Washington D.C., U.S. (1951-1954; 1959-1962); Manila, Philippines (1954-1956); Mexico City, Mexico (1956-1958); and Hong Kong, China (1962-1964). Throughout the deployment at each station, Hays was confronted with major political events in her duty station's history or in the intersection of American foreign and domestic policy. Through the use of Hays's archived collection of personal papers, including letters and newspapers, this thesis presents a more representative story about women and about the Department of State as a larger whole than previous scholarship that has ignored how gender affected diplomatic history.