John S. Burk has authored guidebooks and articles related to the New England outdoors and worked for 10 years as historical researcher and archivist at Harvard Forest. For Massachusetts Covered Bridges, he traveled to repositories throughout the state, including historical societies, libraries, town halls, and the state transportation offices in Boston. With the invaluable assistance of numerous contributors, he has compiled this collection of images that document many of the lost bridges and also record the changes of the few that remain today.