http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Monthly, with annual summary called no. 13
Vols. for 19 -1965 issued by United States Weather Bureau, for 1966-1975 by Environmental Data Service, for <Feb. 1983-> issued by National Climatic Data Center.
U.S. Dept. of Commerce, National Climatic Data Center, Federal Bldg., Ashville, NC 28801