The George W. Stewart papers include correspondence, speeches, memoirs, and reprints of Stewart's published articles. This material primarily reflects his professional activities in the field of physics. Some family photographs are included in a manuscript about the life of Stewart's father, who was a Methodist minister. Correspondence with his sister, Mary Morgan, is included, as well as from his brother, Oscar, who was also a physicist. An undated draft of a sermon is included, Jesus' Conception of God, which may have been delivered at the Iowa City Unitarian Church.The focus of Stewart's research was acoustics, as well as the crystal formations found in liquids. He was also interested in promoting gifted students. Correspondence includes a description of a spring 1938 trip to Paris, London, Copenhagen, and Stockholm to visit the laboratories of physicists such as Niels Bohr and Manne Siegbahn. Correspondents include Harold C. Urey, who earned the Nobel Prize in Chemistry in 1934. The minutes of the National Research Council conference of December 1921 are included, as well as minutes from the Iowa Colloquium of College Physicists, dated 1946 to 1952. One folder contains Stewart articles compiled by James P. Wells.