George Boas (1891 – 1980) was a Professor of Philosophy at Johns Hopkins University. The collection spans the years from 1920 to 1980, and consists of articles, correspondence, notebooks, reprints, short stories, and speeches.
Samuel Ottmar Mast (1871-1947) was a biologist and zoologist at Johns Hopkins University. The collection consists of correspondence, administrative information related to running an academic department, and reprints of articles. The collection materials range in date from 1912 to 1947.