The Vol I and II Books (Cameras and Lenses) from the set of 3 are now available again from Leica Society International as limited editions.
https://leicasocietyinternational.org/shop/p/leica-an-illustrated-history-volume-i-cameras-volume-ii-lenses
https://leicasocietyinternational.org/shop/p/leica-an-illustrated-history-volume-i-cameras-volume-ii-lenses-1
The first edition is an 'Art Edition' with signed photographs and numbered and signed books and the second one, a 'Deluxe Edition', will have the signed books and a different number range.
Jim Lager is, of course, a founder member of Leica Society International. The books have been much sought after, having been out of print for many years. These are just reprints and there is no update to the content.
William