http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
history, related philatelic material, and system of registration of inmate mail
v. 1. History -- v. 2, pt. 1. Prisoners mail. Intoroduction and camps A-K -- v. 2, pt. 2 Prisoners mail. Introduction. Camps L-Z