I had a letter I wanted to send Larry a couple of years ago and sent it via Scott. I got a signed response from Larry which was personalized (in that it actually discussed my letter--I'm not under illusions that Larry sat there writing it!). Mine was a thank you though . . . not sure what you're planning on sending.

I'd suggest the Scott route . . . he seems to find the right places for letters (whether they be issues or compliments).