Elvira Hufschmid

Hi here is a cool piece from 2004 described on the artists website here

"interactive video sculpture 2004
moving closed-circuit installation
aluminium-construction, 14 monitors,
14 surveillance cameras,
size 7`1" x 11`5"

A rocking construction carries a corpus of 14 monitors to which 14 small colour cameras are attached. Each camera is recording a different section of the installation space and transferring the images directly to one of the monitors on the rocker. The rocking motion of the sculpture composed of monitors and cameras generates moving pictures from differing perspectives that represent the room and its content as a mobile three-dimensional body."

National Center For Experimental Television

Here's an interesting website for the now defunct (unlike The ETC) National Center For Experimental Television that existed in San Francisco between 1969 to 1975 the website seems a little unfinished but has a great archive of information and images including photos of the Beck Direct system and the Videola by Don Hallock.