http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"A microfilm project of University Publications of America."
Microfilm of letters, reports, hearings, etc.
Accompanying guide (7 pages) containing table of contents has call number: MTXT,REF HD9565 .O430 1975 Guide.