Small & Barringer are THE American experts on Zeiss Ikon cameras.
This well written book has excellent, clear, detailed, black and white photos of many post WWII Zeiss Ikon cameras with an emphasis on the Contax rangefinder line. This title is loaded with information about Zeiss Ikon's amazing post war recovery and eventual failure in the face of the Japanese SLR juggernaut of the 60s and 70s
Aside: Zeiss Ikon fans should join the Zeiss Historica Society for more information.
For Zeiss Ikon lovers this is a 'Must Have' title. I only wish this book were longer. Highly recommended.