RISM -- International Inventory of Musical Sources after 1600 / Series A/II: This link opens in a new windowMusic Manuscripts after 1600 is the most comprehensive annotated index and guide to music manuscripts containing more than 657,000 manuscript records by over 22,500 composers found in over 800 libraries and archives in 32 countries including: Australia, Austria, Belgium, Belarus, Brazil, Canada, Croatia, Czech Republic, Denmark, Finland, France, Germany, Great Britain, Hungary, Italy, Japan, The Netherlands, Mexico, New Zealand, Norway, Poland, Portugal, Rumania, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, Uruguay and the United States.