I would like to contact Voyager's camera PI Bardford Smith, but I can't find his email or address. In fact, I don't even know whether he is still alive...
Anybody knows how can I contact him?

Brad Smith was at the Institute for Astronomy, University of Hawaii. He retired some time recently and now lives in Santa Fe, New Mexico, but he is still active in the Mars section of the Working Group for Planetary System Nomenclature, among other things. I don't have an email for him. A search should get you his address.

Phil