Gregory, T. Edgar. Liberty or Death! The Northern Campaigns in the American Revolutionary War. Heritage Books, 1994. ISBN: 0788400231.
xii., 397 pp., tiny bump top back corner, otherwise as new. Very good. Paperback. 
This book focuses on what came to be known as the Northern Department of the Continental Army, and the enemies that opposed it, during the Revolutionary War. Built around excerpts from surviving accounts written by Americans, Germans, and British, it documents the struggle for control of the south-north waterway running from New York to Quebec, from the Hudson River through Lakes George and Champlain to the Canadian rivers Richelieu and St. Lawrence.