Francis D. Murnaghan (1893-1976) was professor of mathematics at Johns Hopkins University from 1928 to 1949. The collection consists of research notes, lecture notes, correspondence, reprints, and drafts ranging in date from 1925 to 1971. Several lectures are in Portuguese and were presented by Murnaghan at the Instituto Tecnológico de Aeronáutica, São José dos Campos, Brazil.

Joseph Sweetman Ames became Director of the Physical Laboratory at Johns Hopkins University in 1901. He taught until becoming provost of the University in 1926 and president from 1929 to 1935. This collection largely consists of speeches and lectures given at Johns Hopkins, but also includes correspondence, photographs, reprints, and biographical information.

The collection of astronomer, chemist, and environmental activist, Sally H. Dieke, consists largely of papers from her teaching career and her work with local environmental groups, which range in date from 1886 to 1989.