At 27 Sep 2018 12:59:50 +0000 (+00:00) from Donald ODona <mutiny.mutiny(a)india.com>:
to the /usr device.
Much later in the 80ths much more disk space was
available and a separate /home was created. Exacly when I don't know, but there was
no /home in Ed. 7 but System V release 3 had it already.
4.3 BSD had it, as I found out, after login in a few sconds ago. 4.3BSD was released in
June 1986. Thus the /home appeared in between 1979 (Ed 7) and 1986.