From the Guidebook:
In a simple laboratory on
this site, 202 Green Street, Philo Taylor Farnsworth,
U.S. pioneer in electronics, invented and patented the
first operational all-electronic 'television system.'
On September 7,1927 the 21-year-old inventor and several
dedicated assistants successfully transmitted the first
all-electronic television image, the major breakthrough
that brought the practical form of this invention to mankind.
Further patents formulated here covered the basic concepts
essential to modern television. The genius of Green Street,
as he was known, died in 1971.
Plaque placed by the State Department of Parks and Recreation in cooperation with the Philo T. Farnsworth Foundation, Inc., September 15, 1981.