The earliest reference I can find to "i18n" in my old e-mail trail is the following e-mail to the "sun!unicode" mail list by Glenn Wright. This was Oct 5, 1989. By that time, the term was definitely current, as Mr. Hiura suggests.
Rick ------------- > From upheisei!attunix!sun!glennw Thu Oct 5 15:59:05 EDT 1989 > Date: Thu, 5 Oct 89 12:46:22 PDT > From: sun!glennw (Glenn P. Wright) > To: sun!unicode > Subject: Next Unicode meeting > > Time: > > Monday Oct 9th. 4pm > > Place: > Sun Microsystems, Building 5, 2550 Garcia Avenue > > Agenda: > > Discussion of Current X3L2 proposal status > Discussion on future Unicode committee organisation > Joe will have updates on the Unicode chart > (depending on the As pitching rate) > Liason reports - > X/Open, > Joint i18n meeting, > Ad Hoc meeting in Peking (oops). > > Other (could be lots of this) > > > How to get there >