Thomas Edison experimented with the transmission of vocal sounds and images while living in the Boston area. The great inventor was commemorated in a U.S. postage stamp
This information was obtained from the 1950, 1960, and 1970 Census of Population and Housing and the First Count Summary Tape. It identifies absolute change in 1950-60 and 1960 and 1960-70 as well as identifies the non-white population in each…