1993 — Encarta is first published by Microsoft

Of all the events I’ve classified as Dateless here – meaning that, for one reason or another, no way existed to date them accurately, this is the most peculiar. But the information does not seem to be anywhere on the web – even Microsoft’s own site does not record the release date of this, the earliest version of their cd-rom encyclopaedia, Microsoft Encarta.

Encarta is in many ways a bridge between traditional encyclopaedias such as the Britannica, and internet based encylopaedias such as Wikipedia. While its editing policies and hard-coded nature are in the tradition of the Britannica, its searchability represented a massive advance, as did its use of hyperlinking between articles and the inclusion of animations or archival footage to help illustrate articles.

Referenced in:

The Big Bang Theory — Barenaked Ladies

If anyone reading this owns any copy of Encarta, I’d be curious to know whether Encarta’s entry for itself lists its original release date.