found: Horse gaits, balance, and movements, c1992:CIP t.p. (Susan E. Morris)
found: LC data base, 04-27-92:(hdg.: Harris, Susan E.)
found: BL AL recd. 20 October 1988:t.p. (Susan Eileen Harris, born 1946)
found: Dressage training in-hand, 2018:t.p. verso (illustrations by Sue Harris)
found: Trafalgar Square Books website, viewed 30 January 2020:(Susan E. Harris, international clinician, riding teacher, equestrian author and artist from Cortland, New York, author and illustrator of popular horse books)