Maybe it's a good time to mention that the grant I got for my PhD research is a project collecting documents and oral histories of GIS software development. Materials collected will eventually be accessioned to the Computer History Museum. If you work/have worked on GIS tools (web mapping is part of it!!) I would love to talk to you!!
@ingrid Are you aware of the BBC Domesday educational system in the UK from the mid 80's? It wasn't a traditional formal GIS, but an educational tool using some fairly wacky tech for the time; https://www.domesday86.com
Domesday86.com

Recreating the Domesday Experience

Domesday86.com