I have received Marc’s book “Non- Leitz LEICA Thread-Mount Lenses, A 39mm Diversity”, First English Edition 1997 (Wittig Books, Germany). The book has an excellent presentation, it has hardcover and is very well printed in high quality glossy paper. Along 142 pages Marc writes about the Leica Thread Mount lenses, from the beginning in 1920 up to the rebirth and decline 1945-1993. Lenses are described according their features and main technical specs, Marc also writes about the historic context and miscellaneous data with his colorful and rich prose. There is a lot of research behind the book, persons like Charles Barringer among several others mentioned by Marc contributed to the book info. Zeiss, Schneider, Kilfitt, Novoflex, Meyer, Astro, Fed and Soviet Optical factories among less known lenses manufacturers around the world are included in the book, Marc explains why he does not consider the Japanese LTM lenses ( the Mitsubishi conspiracy is not mentioned anyway :-) Another very interesting point on the book is that it is plenty of excellent B&W photographs about lenses and cameras, they are to enjoy really if you like the classic equipment as I like it, there are images about cameras, lenses and accesories combos very rare to see in other source; the book contains very good info on the reflex housing for Leica and some RF cameras difficult to find together in other sources. The endnotes, tables, Addendum and Lens coatings, Serial Numbers and Lens Markings, Clones, Copies and Fakes appendix are plenty of info. I need to read the book in detail yet, (I received it today) but it’s easy to see this is an excellent book with significant research and very well written, a book to recommend if you are interested on photographic equipment history, or if you are a collector or if you are an user interested about to know photograhic gear and its history. The book is a collector item itself due to its rarity and the topic considered. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list