Breeders:

Andelstravet (Sweden)
Benign Stable (Norway)
Bluestone Farms (USA)
Breed Team 2000 (Denmark)
Deseks (Sweden)
Du Vallon (France)
Kvakstad Gård (Norway)
Landåsen Gård (Norway)
Menhammar Stuteri (Sweden)
Minnamara Farm (USA)
Nes Hingstestasjon (Norway)
Peak Breeding (Denmark)
Windsong Stable (USA)
Stall Connected (Sweden)
Stall Ghost Busters (Norway)
Stall G.T. (Norway)
Stall Skadberg (Norway)
Staro International (Sweden)
Stuteri Broline (Sweden)
Stuteri Lindegården (Sweden)
Stutteri Park (Denmark)
Trotting Horse Farm (Denmark)
Västerbo Stuteri (Sweden)

Other links:

Andelsinfo
Breed and Race
Det Norske Travselskap
Enviroshaw
E-travet
Harnesslinks
Harness Racing New Zealand
Harness Racing UK
Historical Standarbreds & Their Foundation sires
International Trot Service
Irish Trotting
Kjelle Trot
Macks.it
News Trot
Prince Edward Island Harness Racing Ind. Assoc.
Stall Lindmark
Standardbred Canada
Sukuposti.net
The Horse Information Centre
The Standardbred and Trotting Horse Association
of Great Britain and Ireland
Trote Argentino
Væddeløbsbladet
Ylva Marias Trav & Stamtavlor