author
Best known for a concise, readable guide to one of the Civil War’s most important campaigns, this writer helped bring the story of Chickamauga and Chattanooga to a wide audience. His work blends battlefield history with a strong sense of place, making it useful for both curious readers and park visitors.
James R. Sullivan is known from available sources as the author of Chickamauga and Chattanooga Battlefields, a volume in the National Park Service Historical Handbook series. The handbook was published in Washington, D.C., in 1956 and later reprinted in 1961, and it focuses on the Chickamauga and Chattanooga National Military Park in Georgia and Tennessee.
His book was written as an accessible history of the 1863 campaigns around Chattanooga, covering the battles, the larger wartime importance of the region, and practical guidance for visiting the park. That combination of history and orientation gives the work a clear, welcoming style that still appeals to readers interested in Civil War landscapes.
Beyond that handbook, I could not confirm many biographical details about Sullivan himself from reliable sources available here. What can be said with confidence is that his surviving work is closely associated with the National Park Service and with public-facing Civil War history.