http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
maps : color ; 46 x 63 cm. and 52 x 66 cm.
Porto Alegre [with city plans of Asuncion and Porto Alegre on verso] -- Rio de Janeiro [with city plans of Sao Paulo and Rio de Janeiro on verso]
At head of title: War Department, Corps of Engineers, U.S. Army.
Four classes of roads and six gauges of railroads are shown.