Andersonville Prison, also known as Camp Sumter, was a Confederate military prison built in Georgia during the American Civil War. At the height of its fourteen months of operation, occupancy exceeded 45,000 - over four times the intended 10,000 prisoners - leading to overcrowding, malnutrition, and disease. The horrific conditions of the prison led to over 13,000 deaths, which have been documented in this publication, primarily sourced from The Soldier's Story of His Captivity at Andersonville, Belle Isle by Warren Lee Goss, 2nd Massachusetts Regiment of Heavy Artillery.
This work is a list by Dorence Atwater of the 2nd New York Cavalry. He was only 19 years old when he came to the prison where he became the "keeper" of the books to record deaths. His list contains almost 12,500 soldiers who died while a prisoner at Andersonville. The list offers details such as names, ranks, the numbers of their graves, the regiments and companies they belonged to, the date of their death, and the cause of death. The list is by state of origin and then alphabetical within that state. A full-name index is used to conclude this work.