Reference 

Classical Composers

Graphical Timeline of Major Composers
Dolmetsch Resources
Dolmetsch Music Dictionary
Orpheon Foundation – Museum of Historical Instruments

Hello Cello

Internet Cello Society
Cello Heaven
Cellists on the Web


Piano

Pianists on the web
The Piano Page
The Piano Education Page
Piano World

Chamber Music

String Quartets on the web
Chamber Music America
Chamber Musicians of Northern CA
San Francisco Chamber Orchestra
New Century Chamber Orchestra
Del Sol String Quartet