There has been data ("Sharpshooting Rifles of the American Civil War: Colt, Sharps, Spencer, and Whitworth (Weapon) - ISBN-13 978-1-4728-1593-4") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Wed Feb 5 00:21:11 2020, so the data displayed here has been removed .