1866 – Born on the 25th of December in Pittsburgh, Pennsylvania.
1888 – He first completed his Master of Arts in Amherst Collage, Massachusetts, U.S.A.
– He studied medicine in College of Physician and Surgeon of New York, U.S.A.
1893 – He returned to the College of Physicians and Surgeons as a instructor of history.
1897 – He served as a clinical pathology instructor in College of Physicians and Surgeons.
1899 – He accepted a professorship in clinical pathology at the Medical College of Cornell University in New York.
1902 – He helped to establish one of the first funds for cancer research.
1908 – He served as a President of the Harvy Society.
1920 – He published his first work on a new kind of malignant osteoma.
1931 – He was elected as a president of Medical Board of the General Memorial Hospital.
1939 – He retired in General Memorial Hospital.
1943 – He died on the 16th of May because of bladder cancer.