VanDerBeek was an incredible creative person. You couldn't stop his curiosity. His computer animation with Ken was done probably around 65 to about 67, 68. Very early wave.
A. Michael Noll, A. Michael Noll on 1960s Computer Art at Bell Labs
Then, another important moment is when Lillian Schwartz and Stan VanDerBeek were both invited into Bell labs to work with Ken Knowlton. VanDerBeek and Knowlton’s Poem Field videos and those early films that Lillian made are just extraordinary works of generative art.
Casey Reas, Casey Reas on the History of Generative Art - Part 1