Columbia subject headings:
Horses--Early works to 1800.
Horses--Training--Early works to 1800.
Harvard subject headings:
Horses--Early works to 1800.
Horses--Training--Early works to 1800.
Princeton subject headings:
Horsemanship--England--Early works to 1800.
Horses--Early works to 1800.
Horses--Training--Early works to 1800.