Excellent source covering the history and practices of music from around the world. Each volume covers a different geographical area. Reference ML100.G16 1998
The print version of the online resource is also available in the library. The definitive source for all things related to music. Also available online through Grove Music Online. Reference ML100 .N48 2001
RISM is the primary search tool for help in finding music manuscripts (most are pre-1800) located in libraries, archives and private collections around the world.