Yes, you missed it. I erased the link when I edited the first post. Its back now.
The program is a
web-page:
https://books.millmans.us/bluebooks.html. You can just click on the link that says "web page" above.
If you are using Chrome on android or iOS, you should be able to "install" it as it were an app, usually by selecting "add to home page" and then choosing install.
Good luck.