http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
answers to your questions about old buildings
Technical Preservation Services Division.
Technical Preservation Services, National Park Service, U.S. Department of the Interior ; drawings by David J. Baker.
Donated to the Technical Reference Center by Herbert C. Hale, Jr. '52, July, 2005.