The role of Native Americans and African Americans in the American Revolution has been added to this update of the 1971 edition. New information is surfacing because metal detectors are locating artifacts. The National Historic Preservation Act in 1966 and the American Battlefields Protection Program run by the National Park Service have brought interest and funding to expand the borders of some sites and to provide help for the researcher. States included are Alabama, Canada, Caribbean, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, and West Virginia. Articles often have maps and some have black and white photographs. The choice of things to include is interesting. Spring Mill State Park near Mitchell, Indiana is featured because it has 100 acres of primeval forest demonstrating the frontier woodlands of the time while describing in much detail George Rogers Clark’s expeditions near Vincennes. This will be an interesting resource for students who want to match the places of the war to the descriptions of the battles of the war.