Just a quick (and sad) note to provide an update on the library of Arthur Schlesinger, Jr. (first post here). I've been in touch with both Professor Nasaw who arranged for the collection to go to CUNY and with the acquisitions librarian for the Graduate College there. Both inform me that no inventory was made of the collection before it was broken up. The books that are being acquired by the various CUNY libraries will contain no public note to say that they came from Schlesinger's collection.
I wish we'd been able to catch this before it happened. This one will haunt me.