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This article was created or improved during WikiProject Europe's " European 10,000 Challenge", which started on November 1, 2016, and is ongoing. You can help out!

Some useful sources:

• Mason's World Encyclopedia of Livestock Breeds and Breeding Contains discussion of several trotter breeds and their origins; Sponenberg is a co-author, likely to be authoritative
• Mason's World Dictionary of Livestock Breeds, Types and Varieties Short entry, not much info
• Equine Sports Medicine and Surgery, short entry, but useful info and authoritative— Preceding unsigned comment added by Montanabw ( talk • contribs) 20:00, 25 December 2016 (UTC) reply

Hmm, didn't see this before. I did look at Mason 6th edition, but didn't get anything useful from it. It's a valuable resource that I often use. The Equine Sports Medicine and Surgery book, on the other hand, appears to have published in 2013 content that was added here in 2010. Although it's published by one of the world's most reputable publishers, I suggest we treat that with extreme circumspection. Justlettersandnumbers ( talk) 01:44, 13 January 2017 (UTC) reply

Hmmm... Elsevier Health Sciences is generally reputable, I would hate to think that they copied from WP -- perhaps they utilized some of the older sources, Edwards or whomever. Who knew? Montanabw ^(talk) 11:23, 5 February 2017 (UTC) reply