HP-50G case puzzle

[ijabbott]

(12-04-2018 08:45 PM)cdmackay Wrote:  

(12-04-2018 08:09 PM)Jlouis Wrote:  I think you can edit Wikipedia text, but you have to put reference or source of your information.

Yup, I've edited WP before. I was going to put this thread as the reference.

However, the reference format on that page is baroque in the extreme, so I've lost interest.

I've added some references to posts in this discussion. Feel free to edit them and fix the commented-out authorship in the references.