I have several titles (USN battleship/cruiser aircraft, B-32, B-18, Curtiss fighters, Fleet Air Arm) from Schiffer Books, and you can order directly from them:
Schifferbooks.com - Surf Memorabilia, Woodcraft, Afrikakorps, Waffen-SS, Rommel, Geisha, Pin-up Girls
Very good quality books, the printing, photographs, endpapers, etc are all top notch. There are some typos and the writing is not consistently at the level of the presentation, but overall I'd recommend books from this publisher without hesitation.