Here is a link to a site which describes itself:
"Letters of Note is an attempt to gather and sort fascinating letters, postcards, telegrams, faxes, and memos. Scans/photos where possible. Fakes will be sneered at. Updated every weekday." http://www.lettersofnote.com/
Well, worth checking out. Some amazing stuff. No Buk I could detect (but maybe someone wants to email a scan of suggested Buk letter?).
Anyway, lots to enjoy.
Laughing boy
Joey K.