Developer Edward Bouton revolutionized American life with the creation of Roland Park, one of the country's first "streetcar suburbs," located in Baltimore, Maryland. Unlike many late-19th-century suburbs, Roland Park is well preserved, and many would consider it a late-Victorian version of Colonial Williamsburg. In the 20th century, Bouton also created Roland Park's sister developments: Guilford, Homeland, and Original Northwood. The latter two were developed after the heyday of the streetcar; in contrast, Roland Park without streetcars would have been unthinkable. Even now, trolley memories...