"Bits and Bridles: An Encyclopedia" by Dr. Gerhard A Malm, DVM.

This book spans the entire spectrum of bitting:

Spade bits, ring bits and hackamores

Liverpool bits and overcheck bits

Pelhams and snaffles

Weymouths and bridoons

Elevator and gag bits

Antique bits including US Military bits

Complete with diagrams detailing parts of each respective unique bit and parts of the bridle, discussion of the origins of bits, bit mechanics, bit makers and materials, and so much more!

549 pages with black and white photographs and illustrations throughout which thoroughly spans bits across all disciplines from driving and dressage to jumping and vaquero.

Hardback edition (1996) with dust jacket is in excellent condition. Asking 150.