Scope and Contents Nu Sigma Nu pin of Delaney's father, William E. Delaney, Jr., Jefferson Medical College, 1923; photograph portrait of W. W. Keen, M.D. in military uniform, signed by Keen for William E. Delaney Jr., 1923; Spencer Bright-Line Haemacytometer used by Delaney to learn blood test methods at Jefferson Medical College, manufactured by American Optical Company, ca. 1953. Manuscript material consists of records of payments for laboratory use at Jefferson Medical College, 1950-1953; handwritten notes...