TROMBONE SITES:

The Trombone Forum
http://tromboneforum.org/

Online Trombone Journal
http://trombone.org/articles/browse.asp

Smart Music
http://www.smartmusic.com/

MUSIC STORES:

The Horn Guys 
http://www.hornguys.com/

Dillon Music
http://www.dillonmusic.com/

Slide Bone
http://slidebone.com/

TROMBONE MANUFACTURERS:

S.E. Shires Trombones
http://seshires.com/

Greenhoe Trombones
http://greenhoe.com/

Edwards Trombones
http://edwards-instruments.com/

Rath Trombones 
http://www.rathtrombones.com/

TROMBONISTS WEBSITES:

Ben VanDijk
http://basstrombone.nl/

INSTRUMENT REPAIR: 

Dan Oberloh
http://oberloh.com/

OTHER:

Sitka Fine Arts Camp
http://fineartscamp.org/

Poulsbo Community Orchestra
http://www.poulsbocommunityorchestra.org/