The chapter “Mid-Atlantic” discusses scientific and technological sites of adult interest in Delaware, Maryland, New Jersey, New York, Pennsylvania, and Washington, DC, including the Johnson Victrola Museum, National Cryptologic Museum, the Sarnoff Collection, New York Botanical Garden, Joseph Priestley House, and Smithsonian Institution. The traveler is provided with essential information, including addresses, telephone numbers, hours of entry, handicapped access, dining facilities, dates open and closed, available public transportation, and websites. Nearly every site included here has been visited by the authors. Although written with scientists in mind, this book is for anyone who likes to travel and visit places of historical and scientific interest. Included are photographs of many sites within each state.