Repertoire International des Sources Musicales (RISM)
The R̩pertoire International des Sources Musicales (RISM) РInternational Inventory of Musical Sources Рis an international, non-profit organization that aims to comprehensively document extant musical sources worldwide: manuscripts, printed music editions, writings on music theory, and libretti that are found in libraries, archives, churches, schools, and private collections. This is an Open Access resource.