Over the last 30 years, the Connecticut Office of State Archaeology and the Department of Agriculture’s Natural Resource Conservation Service have entered into a partnership employing ground-penetrating radar (GPR) to the study of the state’s archaeology and history. As a result, many historical cemeteries and places of note in Connecticut have been investigated. The authors have selected 10 geophysical surveys, which have used GPR as a non-intrusive, non-destructive exploratory tool, that have elicited positive results in the search for unmarked burials, confirmation of marked burials and to authenticate areas of known historical events. This book narrates the stories of GPR studies at 10 historical sites in Connecticut, spanning the 17th to the 20th centuries. Each chapter investigates and highlights a ‘history mystery’ and differing aspects of our research, including the ‘lost’ grave of an African-American Revolutionary War veteran, the verification of French Revolutionary War military personnel in a mass grave, the detection of a below-ground hidden 19th-century family burial tomb, the discovery of hurriedly dug, unmarked burials associated with the 1918 influenza pandemic and the detection of the unknown location of a 1941 military plane crash site, among others. Professionally, the authors have over 40 years’ experience in GPR, soil science and archaeology. They bring their collective expertise to the reader in a scientific approach with a personal, story-telling touch. Each chapter delves into the history of the sites and the nature of the geophysical search (i.e., how the equipment was used) and the interpretation of the data in regard to solving a historical problem.