 Mount was initially charged with two counts of interstate transportation of stolen property, with the first count on the Whistler letters from the Library of Congress and the Churchill and James letters from the National Archives.The second count covered 144 of the 158 Civil War documents Mount was attempting to sell to Rochefort.Because of excellent record-keeping by both institutions, including call slips and microfilm versions of the documents, Mount was convicted on March 30, 1989, and was sentenced to eight years in prison.