The information packs for the JISC elib (electronic libraries) programme, from the mid to late 1990s.
Added to my archive of print-based ephemera of old projects and programmes of this nature in the UK; there's now over 100 items taking up a good corner of storage.
I've also, after a lot of frustration, converted most of the emails from my years working at or on UKOLN, elib, Ariadne, ROADS and OMNI into a spreadsheet without too much loss of data. Apart from wondering how many hours I spent writing long emails (thousands too many) it's a powerful memory enabler into the academic and library culture of the time.
Reading through the flyers - each project had their own two sides - it's an eye opener to see how many of the issues and concepts that academia face now, 15 years on, were being discussed and tackled then. Especially the hybrid (print and digital) library, and access to digital content.