This image appears in the 1979 book Future Cities: Homes and Living into the 21st Century.
The magic of laser-holography, a new technique which creates 3-D pictures apparently out of thin air, could result in business conferences like the one shown above. On the left the heads of a branch office have just come in to their boardroom, first thing in the morning. Across their table is their boss. He is in the head office of the company in the centre of a major city thousands of miles away. It is night-time and is the end of his day. 3-D cameras hanging from the ceilings of each room create the illusion of a [complete] room with the two sides present (this picture has been split down the middle to avoid confusion). Electronic conferences like this would save enormous amounts of time, money and energy.