Includes correspondence, biography files, notes and notebooks, photographs, publications, reprints, drawings, awards, and artifacts related chiefly to Von Kr̀mǹ's Air Force duties, such as reports written in 1944 as director of the AAF Scientific Advisory Group as well as copies of his published articles, texts of lectures, program reports, interviews, conference papers, and presentations. A few earlier items such as a letter of introduction, 1908; also official documents: appointment letters, personnel clearances, actions, pay and travel data, etc. relating to his military career; various photographs of Von Kr̀mǹ, in groups, with his sister Josephine de Kr̀mǹ; at work; as well as assorted artifacts and personalia: two Von Kr̀mǹ busts; a plaster face; his office furniture; slide rule; drafting tools; and his cap (black beret) and gray scarf. Topics: aerodynamics, astronautics, thermogasdynamics, thermodynamics, thrust augmentation, magnetofluidmechanics, nuclear engineering in aerospace, wind tunnel technology, isotopic turbulence, among others.