Historic first telecommunication by sign language

On this date:

In 1940, two deaf women communicated by sign language via two-way 
television sets:
One was installed at the New York World's Fair,
and the other at a television station eight miles away.

In 1860 Balloonist and photographer James W. Blach makes the first 
aerial photographs
in America from an altitude of 1200 ft. His subject: Boston.

In 1790 the cornerstone for the U.S. White House was laid. It is the 
capital's oldest
federal building.  [The White House is the home of the president.]

Best Regards/Harvey Bingham
http://www.hbingham.com