I collect books, too, but am rubbish with posting pics, so here's a selection from my library:
Factual -
Horse's Muscles in Motion, Sara Wyche
Physical Therapy and Massage for the Horse, Denoix and Pailloux
How Your Horse Moves, Gillian Higgins (one of my all-time favs)
Equine Acupressure, Zidonis, Snow and Soderberg
Equine Massage, Hourdebaigt
Schooling In-hand, Hilberger
How Horses Learn, Debbie Marsden
Horse Training In-hand, Ellen Schuthof-Lesmeister and Kip Mistral
Horse Watch, Marthe Kiley-Worthington
General reading -
Tschiffley's Ride (a treasured possession!)
Treasures of the Bloodstock Breeder's Review, Rasmussen and Napier
Bloodstock Breeding, Leicester
anything of Jocelyn de Moubray's penmanship
The Horse in the Ancient World, Ann Hyland
The Pocket and the Stud, Harry Hieover (published 1851, second edition)
Life Lessons from a Ranch Horse, M Rashid
The Art of Horsemanship, Xenophon (sadly not a first edition!)
Thoroughbred Breeding, Mordaunt Milner
Phew!