Anybody seen Harold the Spare Change guy recently?

Martha Scanlon e-mails to ask:

The "regulars" at Porter Square are worried about where our Spare Change vendor has gone. I believe his name is Harold, because that is what he wrote on a Christmas card he gave me one year. I have been buying the paper from him daily for years and he makes my day, always caring how I am. The Globe vendor said another regular buyer had planned to inquire, but she never got back to him. I assume you can't give out personal info, but if he is in the hospital or something, I would love to be able to get a card to him at least. He is a tall, chubby, very sweet, black man; in case you don't know where he is selling his copies I hope the description helps. Thanks for letting me know if he is okay.