Alfred A. Hart (1816–1908): Chronicler of the Transcontinental Railroad Alfred A. Hart (1816–1908) was a pivotal figure in American photographic history, renowned for his meticulous documentation of the construction of the Central Pacific Railroad—a monumental undertaking that reshaped the nation’s geography and economy during the Gilded Age. Born in Boston, Massachusetts, Hart pursued a career as an illustrator before dedicating hims…