Short answers, pulled from the story.
Historian Jonathan Sarna estimated that over 50,000 books had already appeared on the American Civil War by 2001. He noted that another 1,500 titles were appearing every year since then.
Allan Nevins, Bell Irvin Wiley, and James I. Robertson produced Civil War Books: A Critical Bibliography in two volumes during 1970. This volume lists over 6,000 of the most valuable titles as evaluated by three leading scholars.
Specialized topics like Abraham Lincoln, women, and medicine have their own lengthy bibliographies. Michael Burkhimer wrote 100 Essential Lincoln Books in 2003 while Theresa McDevitt published Women and the American Civil War: An Annotated Bibliography in 2003.
Bern Anderson published By Sea and By River: The Naval History of the Civil War through Da Capo Press in 1989. Francis Bradlee covered Blockade Running During the Civil War with Essex Institute Press in Salem, Massachusetts in 1959.
Andrew McIlwaine Bell wrote Mosquito Soldiers: Malaria, Yellow Fever, and the Course of the Civil War for Louisiana State University Press in Baton Rouge in 2010. Frank R. Freemon published Gangrene and Glory: Medical Care during the American Civil War via University of Illinois Press in 2001.