Don't know about Henry Snell but I can tell you who saw the view from No.9 from 1949 to 1958....
I was born in that house and my father had lived there a goodly number of years. I have him on the 1939 Register at that address with his first wife and they had apparently lived there for quite a while. After her death he married my Mam in 1948.
The picture brought back a few memories. Thanks James!