http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
compiled, edited, and published by the Geological Survey.
"Reprint with changes, 1992"--The Survey.
Scale 1:500,000. 1 in. = approx. 8 miles ;
Lambert conformal conic proj. based on standard parallels 3300ʹ and 4500ʹ