Phone number (US): 410-889-1414.
Answering-machine always on. Just speak up after the beep, and DR will come on if not occupied — otherwise just leave a message, with time & return phone-number.
Calls from phone numbers that do not register on CallerID
will likely not go through.
[Notice to salesvolk: DR has never in his life bought anything offered by any kind of spam (door-to-door, phone, fax, internet) and positively never will.]
If electronic communication fails, simply send a postcard to:
Baltimore, MD 21211-0935
Include a phone number where DR may call you.