Symbolics CGI production notes: How Stanley and Stella came together (1988)
archive.org
archive.org
There was always a big presentation in a theater in the evening where they would debut dozens of animations like this, many with “behind the scenes” looks at how they were constructed and rendered and notes about the new techniques developed to generate them.
After their company Digital Productions (based around the Cray) failed, John Whitney Jr and Gary Demos started a new venture formed around the Connection Machine as the compute hardware and Symbolics workstations as the front end. The Connection Machine software was written in Star Lisp.
Unfortunately this short was all they produced before their funding fell through and the company closed down.
The original source code for the boids program described in "Behavioral animation": http://www.red3d.com/cwr/code/boids.lisp
The accompanying paper: http://www.red3d.com/cwr/papers/1987/boids.html
It impressed the hell out of everybody in the audience when they showed it for the first time.