Consists of miscellaneous material of Lincoln Gilmore Smith, a physicist and professor of physics at Princeton University, relating to his construction and use of mass spectrometers.

Rudolf Ladenburg was a German-born scientist who became a nuclear physicist at Princeton University until his retirement in 1950. The collection contains some of Ladenburg's manuscripts, lecture and course notes, and notes on nuclear physics.

The Valentine Bargmann Papers consists of personal and professional correspondence, personal papers, awards, medals, lectures notes, drafts and published writings, and documents pertaining to the Einstein Papers Project. Valentine Bargmann was an assistant to Albert Einstein at the Institute for Advanced Study and later became a Princeton University professor of mathematical physics.

Consists of miscellaneous academic records and manuscripts of William Francis Magie, distinguished Princeton physics professor and dean.