The file's main content is a list of research publications (1925-1970) arranged according to subject and accompanied by the comments of fellow scientists and co-workers as well as comments by Swings. It is preceded by a detailed curriculum vitae and a short autobiography containing information on Swings' early education; his college years at Universit ̌de Lig̈e and at the Sorbonne, Paris; his Ph.D. work in mathematics (1927); study at Uniwersytet Warszawski in molecular spectroscopy (1928-1930); his tenure as professor of spectroscopy and astrophysics (1932-1976) at Lig̈e; his close collaboration with University of Chicago and Yerkes Observatory from late 1930s-1950s during many visits to the U.S.A., except for the World War II years; war effort as Research Director for Ray Control Co., designing a high speed spectrograph and optical instruments for the U.S. Navy (1943-1945); and presidency of the International Astronomical Union (1964-1967).