These excerpts were brought together by Slater from his files, at the request of Dr. Leon Rosenfeld, to document Slater's visit to Copenhagen, and Bohr's Lab. In general, the letters concern quantum physics.

These are copies of material, mainly letters, not filmed for the Archive for the History of Quantum Physics (see PAAV86-A21). There is an interesting letter from Charle G. Darwin (1932) referring to Paul Ehrenfest, letters about the state of physics at Northwestern University from R. A. Fisher and B. J. Spence, and a letter by Hermann Weyl outlining a talk he was to give in Boston in December 1928.

This collection includes correspondence (4 linear feet), diaries, manuscripts of publications, and research data (6 linear feet.). Mooney-Slater (1902- 1981) was born Rose Camille LeDieu and grew up in New Orleans, Louisiana. She received her BS at Newcomb College, MS at Tulane University and PhD from the University of Chicago (1932) where she worked under Will Zachariasen. Recognized as an outstanding crystallographer, she was the recipient of a Guggenheim Fellowship, appointed chair of the physics department at Tulane University, worked at the Metallurgical Laboratory under the auspices of the Manhattan District at the University of Chicago, and on the structure of crystals and crystalline materials using X-ray diffraction.