1. http://www.forrestsmusic.com
Often used, cheaper price, contain most commonly heard music.

2. http://www.trevcomusic.com
Provides special scores. Indexed by both composers as well as instrumentation.

No.1 and No.2 are bassoon and oboe specialists, including all kinds of musical scores

3. http://www.eble.com
Musical scores for all instruments

4. http://idrs2.colorado.edu
International double reed society

5. http://doublereedshop.com

6. http://www.charlesmusic.com
Good bassoon reeds and cane