Lightyear (San Francisco)

From The Art Of Rock (4.58) is this poster from December 19th and Saturday, December 20th, 1969: at the New Old Fillmore (Fillmore and Geary) that got dumped for the Fillmore West (formerly the Carousel Ballroom) by Bill Graham.

Light Show seems to be listed as Lightyear, do you know anything about them and can help us tell their story?

If you can help with more information about this Light Show we would love to hear from you.

Grateful Dead, New Old Fillmore, December 1969