About the newspaper clippings.
When Leonard retired and moved from his Beverly Hills house and purchased an appartment in Bel-Air, he put all of the clippings and reviews as well as much of his correspondance into a storage locker in the building's basement. While he was away there was a mild earthquake which ruptured the sprinkler system which comes on in case of fire. While the sprinkler system was fixed quickly, Leonard's papers were soaked. When Leonard finally got back to the building, and could open his locker, the papers were nothing but a solidified mess.
We have been able to glean the following information by searching libraries and the Internet, and from Trudy's own personal archives, but of course many of the more important reviews of his more important concerts have been lost.