Old versions of Emacs

Starting my trek through old tape archives, I can find EMACS (all caps) mentioned in 1978. (MIT labs). Is there any earlier mention?

In August 1976, a bunch of hackers decided it was time to write a new editor, using the sharable-library and named-commands (MM) technology developed by Tmacs, but intended for general use. Tmacs was not really set up to be used by anyone but its maintainers, and I think every user had a different set of key bindings, although by that time it was in use by perhaps eight or ten people. The new editor, which was initially called "?" because that was a command name which could not be typed to DDT, was supposed to take full advantage of the TV keyboards, to have a more sensible and consistent set of commands, to have good self-documentation, and to be faster than Tecmac. ? was intended to woo people away from Tecmac. The initial work, up to the point of a semi-usable system, was done by GLS. Later, RMS got interested in his indefatigible fashion, put in a large number of features, and made Teco changes to greatly increase the efficiency and flavorfulness. The editor was renamed to Emacs (abbreviated E) in imitation of the name of the Stanford editor, which it otherwise does not resemble.