PBEM: Richard's photo on a milk carton

Where is Richard you ask?

A clue to the mystery:

The last correspondence we (those of us who are hard at work
thinking up neat things for you to find on the ringworld) had
with him (a couple weeks ago) said he was having trouble getting
to a terminal.

Is there anyone else besides Alan and me working on the ringworld?
- --
John H. Kim
[email removed]
[email removed]