“Handcuff Training by Hiatt-Thompson” by Robert R. Rail, 1996. A heavily illustrated 35 page manual on handcuffing techniques. The emphasis is on the proper use of Hiatt Ultimate handcuffs. Most principles also apply to the use of solid bar handcuffs like Hiatt Speedcuffs, Yuil Model M03, and the new ASP Rigid Handcuffs.
Available at Handcuff Warehouse: Handcuff Training by Hiatt-Thompson