HOPL (History of Programming Languages) conference notes. I can't confirm that they're on there yet but they're riveting.
ETA: They are!
https://dl.acm.org/doi/book/10.1145/800025
ETA: They are!
https://dl.acm.org/doi/book/10.1145/800025
And hit the 'next' button to get at the subsequent papers.
Couldn't find an index.