RISM : Repertoire internationale des sources musicales
International inventory of musical sources.
Established in 1952, RISM is an ongoing inventory of the universe of musical literature created prior to 1800.
pre-19th century books on music
manuscript treatises on music
theoretical writings from a variety of sources on music
printed music collections
music in manuscipt form.
Citations include a complete description of the material, and the library/archival location at which these unique resource materials can be found.
RISM is currently administered as a joint production of the RISM Zentralredaktion at Frankfurt/Main, Germany, and the U.S. RISM Office at Harvard University, Cambridge, MA.
These are the resources to date.
RISM: Series A
RISM: Series B
RISM Directory of Libraries and Library Sigla