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This collection are composed of Ryan's papers from her time as a professor focusing on Baltimore history at Hopkins, from 2002 to 2016. Primarily composed of lecture and research notes, course files, and some manuscript fragments.
Dr. Warren S. Torgerson was internationally known for his work in psychological measurement at Johns Hopkins University. The files include primarily experiment notes and data sets, some lecture notes, and some correspondence, dating from 1962 through 1983.