http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1:100,000-scale topographic map : 30 x 60 minute series (topographic)
1 map : color ; 56 x 78 cm, on sheet 69 x 102 cm
edited and published by the Bureau of Land Management National Operations Center in cooperation with the Bureau of Land Management Montana State Office.
Relief shown by contours and spot heights.
National Geodetic Vertical Datum of 1929.
Includes quadrangle location map and indexes to adjoining maps and to 1:24,000-scale maps.
Scale 1:100,000. 1 cm. on the map represents 1 km. on the ground ;