I wasn't expecting to hear anything back from the man, but I did want him to know how much I've been appreciating his maps and commentary, what a difference they've made for me.
Late yesterday, I heard from him. He's 88 years old and doesn't check his email as often as he used to, he said. But he credits all the walking he's done with being alive now.
Quite an endorsement for walking in the suburbs. Or for walking anywhere.