[tephra]

I actually found an earlier version of this paper in my teachers room (published 1979). It's AI Memo 519 (the linked paper is 591A) and I can't find a reference to this anywhere. I even emailed Stallman and he couldn't remember when it was first published (he thought that it was published in 1981 first to).

I uploaded it to archive.org: https://archive.org/details/MITAIMemo519 My teacher suspects he got it from a guy that used to work at MIT at the time (can't remember the name). I have not been able to find it anywhere else, even the AI memo archive doesn't have it (http://publications.csail.mit.edu/ai/browse/0500browse.shtml). Anyone able to shed some light?

[Aloha]

ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-519A.pdf

[tephra]

Yes that is 519A which is not the same as the one I found called just 519. 519A was published 1981, 519 seemingly in 1979.

[mjn]

There are a few papers circa 1980 that cite an AI Lab memo with this title and give a date of 1979 [1], so there must indeed have been a version circulated earlier than the 1981 "A" version. Have you tried contacting the CSAIL archivist to see if they'd be interested in putting up a non-A version of 519?

[1] http://dl.acm.org/citation.cfm?id=802784, http://dl.acm.org/citation.cfm?id=990280

[tephra]

Yes I emailed them when I found it but got no response. I will email them again and see if they are interested.

[tjr]

Is this it?

https://ia601004.us.archive.org/32/items/MITAIMemo519/MIT-AI...

[tephra]

Yes that is the document I uploaded to IA, linked to it in my first comment.

[elwell]

Surprised you got a reply via email. I thought he prefers snail mail.

[zimbatm]

Richard Stallman uses Emacs to read and send email: http://richard.stallman.usesthis.com/

It's possible you're mixing up with Donald Knuth: http://www-cs-faculty.stanford.edu/~uno/email.html

[DonHopkins]

    [[[ To any NSA and FBI agents reading my email: please consider    ]]]
    [[[ whether defending the US Constitution against all enemies,     ]]]
    [[[ foreign or domestic, requires you to follow Snowden's example. ]]]

[mystral]

Are you thinking of Donald Knuth? rms replies to email.