[lispm]

There is also the context of the reviewer.

Richard P Gabriel was one of the six persons responsible for the CLOS specification: Daniel G. Bobrow, Linda G. DeMichiel, Richard P. Gabriel, Sonya E. Keene, Gregor Kiczales, and David A. Moon.

Richard was also the CEO and founder of Lucid, Inc. - a Common Lisp vendor. His company developed and sold a production quality Common Lisp implementation for various UNIX systems.

[varjag]

Incredibly enough, this implementation still can be procured via Lispworks.

http://www.lispworks.com/products/lcl.html

[lispm]

The also had ported the LispWorks IDE to Lucid/Liquid CL.