United States Trotting Association References United States Trotting Association American organization Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: harness racing/ The decline and rise of harness racing.…fourfold; and membership in the United States Trotting Association (founded in 1938 as a merger of other groups after the governance of harness racing had fallen into disarray) nearly quintupled. Read More…fourfold; and membership in the United States Trotting Association (founded in 1938 as a merger of other groups after the governance of harness racing had fallen into disarray) nearly quintupled. Read MoreStandardbred…Trotting Register Association, now the U.S. Trotting Association. Read More…Trotting Register Association, now the U.S. Trotting Association. Read More