Welcome to the 97th annual meeting of the American College of Oc- cupational and Environmental Medicine. The opening session will fea- ture presentation of the ACOEM annual awards followed by the C. O. Sappington Memorial Lecture. The lecture was named for Clarence Olds Sappington, MD, DrPH (1889–1949), a noted consultant in oc- cupational diseases and industrial hygiene. This memorial lecture, pre- sented annually at AOHC, was created in 1954 to honor this pioneer and serves as a forum to address major issues in occupational and environmental medicine. This year’s Sappington lecture will be given by Arthur L. Kellermann, MD, of the RAND Corporation.