Raymond Pearl spent the majority of his academic career (1918-1940) at Johns Hopkins University, where he was Professor of Biometry and Vital Statistics and Director of the Institute of Biological Research. Founder of the Quarterly Review of Biology and Human Biology, he made significant contributions in the areas of biology, genetics, eugenics, and statistics. The Pearl Papers includes correspondence as well as notebooks, scrapbooks, diplomas, photographs, and 33 volumes of diaries. There is significant correspondence with his wife, Maud (ca. 500 letters), and mother, Ida May (ca. 300 letters), particularly for the years 1895-1934. Of special note is Pearl's correspondence with his friend, colleague, and fellow Baltimoreian, H. L. Mencken (ca. 500 letters). The collection contains important information on the American Association of Physical Anthropologists, The Baltimore Sun, the Birth Control Federation of America, Dartmouth College, the International Institute of Statistics, Johns Hopkins University, and the National Academy of Sciences. This note is currently under review for revision.

Frederick Henry Osborn was an administrator, humanist, and scientist. This collection includes letters, diaries, reports, speeches, drafts of articles and books, oral history interviews, and photographs. There are diaries and letters for his service in Europe with the American Red Cross during World War I. There are some letters and documents, such as patent applications and plans for inventions, from his "business career" period prior to 1928, after which he became a research associate at the American Museum of Natural History studying anthropology and population. This study led to his later important contributions to the redirection of eugenics study in the U.S. and the reorganization of the American Eugenics Society. His other related organizational work and publications relating to human and population genetics are also documented in this collection. There is significant material (letters, diaries, reports) related to Osborn's World War II contributions as the chairman of the Civilian Committee on Selective Service in 1940, and as head of the Morale Branch of the U.S. Army (later, the Information and Education Division of Special Services) in 1941. Also included are important documents, especially his diary, from his work as deputy representative on the U.S. Atomic Energy Commission and the U.N. Commission for Conventional Armaments. His letters, writings, and speeches relating to foreign policy are extensive, spanning the period from the 1940s until his death, much of it from the Vietnam War years. The correspondence with Kathleen Harris is particularly rich in this respect. There is family correspondence reflecting his dynamic philosophy of life, with long series of letters to his parents (1917-1945) and to his children and grandchildren. His later civic and regional interests, as a long-time resident of Garrison, N.Y., are evidenced in the work he did on the Palisades Interstate Park Commission.