Amati Music  
   Offers music for Cello, and the PostureCubes: a portable, adjustable solution to back problems.
   http://www.amati.net/

Lamoureux Violins  
   Sheet music, books, strings, supplies and accessories for classical musicians; Teaching material and aids for traditional and Suzuki method.
   http://www.lviolins.com/

Mona Lisa Sound  
   Offering Rock string quartet sheet music made famous by Hampton String Quartet.
   http://www.monalisasound.com/

Violin Books  
   Rare collectable violin books.
   http://www.angelfire.com/nv/violins/violin_books.html

Discordia Music, Inc.  
   Publisher of new, transcribed, and arranged music for the Double Bass.
   http://www.discordia-music.com/

Lemur Music  
   Offers sheet music, instruments, supplies, and misceallany for the Double Bass.
   http://www.lemur-music.com/

Joseph Patelson Music House  
   Classical sheet music store with extensive offerings for all instruments.
   http://www.patelson.com/

Manontroppo Music  
   Offers arrangements for string ensembles. Some samples are included, and mail ordering.
   http://www3.sympatico.ca/nada.s/Manontroppo.html

String quartet arrangements scores  
   Email ordering only for these titles offered; samples and MIDI files are provided.
   http://www.geocities.com/portnoy123us/free_sheet_music_files.htm

AAMusicStore.com  
   Large selection of popular sheet music, musical instruments and accessories.
   http://www.aamusicstore.com

The ABCs of Strings  
   Janice Tucker Rhoda's instructional series for strings.
   http://www.abcsofstrings.com/

Valkyrie Publications  
   Song books and sheet music for harp and voice: Irish folk songs, Christmas carols, old hymns, new Christian music, and songs inspired by J.R.R. Tolkien, George MacDonald, and Julian of Norwich.
   http://valkyriepub.tripod.com/

Trioville  
   String trio sheet music publisher for violin, cello and viola. This publisher has sheet music for gigs, contests and sight reading with grade levels 3 through 5.
   http://trioville.com