Missing Rider in the Far Western Burbs

I guess that as you get older you start noticing things a bit more frequently.  I moved into a house in the "far" Western suburbs ten years ago.  Being a biker myself, right away I noticed an elderly gentleman with a beard, wearing UI baseball hat, riding through the neighborhood on an older brown Trek touring bike, usually pedaling at a very slow cadence.  I'd see him other places, as well, not only as I drove but also biked around the Western 'burbs.  And the weather didn't make any difference - he'd be pedaling along slowly rain or snow.  Riding on the Prairie Path once, flagged him down to chat and ask him a few questions.  He was friendly enough and answered everything I had asked, but he was a man of few words and then he was gone.

Well, now he appears to be gone completely.  I don't think I saw him at all this year and certainly haven't seen him lately.  If anyone out there has seen someone resembling a rider like this, maybe knows who he was, and what his latest condition might be, I'd sure like to know about it.  I miss seeing him.