I see you've already covered it very well!
I didn't think to search this mailing list ...
These kinds of concrete artifacts help cement the importance of Interlisp for people trying to understand the era.
There is more Interlisp data than I thought but it seems that many references don't really understand the differences between implementations and vendors which are a world apart. It really helps give people an idea of the Tower of Babel situation leading to a "Common Lisp".
By today's standards it would be like calling C#, C++, D, and Java "C".
I'm kind of squinting into my phone right now as I've got trains blasting their horns at 5:00 a.m. but it would be nice to have these collected and referenced (maybe we do).
Ryan