- The industry's most comprehensive pictorial encyclopaedia and value guide for collectors of 6x6 Twin-Lens Reflex cameras.
- Features over 1500 different cameras and illustrates more than 850 models.
- Special sections include a list of over 200 manufacturers and distributors, a history of the 6x6 Twin-Lens Reflex camera and a recap of historical milestones in the development of TLRs.