From at least the 1940s through the mid-1960s, Dr. M. L. Field practiced dentistry in Hartford, Connecticut. Centennial celebrations of Dr. Horace Wells’ daring 1844 use of nitrous oxide anesthesia likely reminded Dr. Field that his own offices on Grove Street and then on Main Street were merely 3 and 1.5 city blocks, respectively, from the original location of Wells’ first dental office. Dr. Field distributed blotters such as this one (above) to local businesses in order to advertise his dental and anesthetic services, which included “Nitrous Oxide and Oxygen or Novocain.” This advertising blotter is part of the Wood Library-Museum’s Ben Z. Swanson Collection. (Copyright © the American Society of Anesthesiologists, Inc.)

From at least the 1940s through the mid-1960s, Dr. M. L. Field practiced dentistry in Hartford, Connecticut. Centennial celebrations of Dr. Horace Wells’ daring 1844 use of nitrous oxide anesthesia likely reminded Dr. Field that his own offices on Grove Street and then on Main Street were merely 3 and 1.5 city blocks, respectively, from the original location of Wells’ first dental office. Dr. Field distributed blotters such as this one (above) to local businesses in order to advertise his dental and anesthetic services, which included “Nitrous Oxide and Oxygen or Novocain.” This advertising blotter is part of the Wood Library-Museum’s Ben Z. Swanson Collection. (Copyright © the American Society of Anesthesiologists, Inc.)

George S. Bause, M.D., M.P.H., Honorary Curator, ASA’s Wood Library-Museum of Anesthesiology, Schaumburg, Illinois, and Clinical Associate Professor, Case Western Reserve University, Cleveland, Ohio. UJYC@aol.com.