Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Elsa M. Garmire:

"

In the summer of 1968, Garmire joined the organization Experiments in Art and Technology. She used laser light in artistic presentations, such as a July 1969 "laser wall" made of argon laser beams through which spectators could walk. For the Pepsi Pavilion at Expo '70 in Osaka, Garmire helped E.A.T. build "the world's largest hemispherical mirror".[citation needed]