Includes photographs, mailing lists, mailing labels, newsletters, and manuscript pages pertaining to Dr. Greenfield's published texts, particularly his work on the Chief Medical Residents for the Duke University Department of Medicine. These materials were collected primarily by Greenfield prior to the 2005 publication of his book "Duke Chief Medical Residents: An Overview." File types include images (JPG, TIFF, and Photoshop images) and Microsoft Excel and Word. The original carriers for these files were CDs. The digital files date from 2008 to 2013, with original material dating from 2006 to 2013.