This is a photograph of the author, Moshe Rubin, performing on the English concertina. The occasion was the AACI (Association of Americans and Canadians in Israel) Folk Music Evening in Jerusalem, Israel on February 8, 1997.
Here are some other interesting sites pertaining to the English concertina:
It gives me pleasure to acknowledge my concertina teacher, Boris Matusewitch (1918-1978), America's foremost virtuoso on the English concertina. Although I studied under him for all of two years (1969-1971), he influenced my musical development, imbuing me with a love for music and the concertina, which has endured to this very day.