As some might know, I was 'class of 72' at RMIT Architecture and had actual drawings [not CAD] that dated from then all the way through to the last which was in 2018 [OK, so 46 years]. Managed to move plan drawers a few times, even after actually 'retiring'. Every time I thought "these are a record of a heck of a lot of blood, sweat and tears'  I couldn't see myself parting with them as scrap-paper-in-the-recycle-bin. Then I had an idea..."digitize" them.  Modern Mobile Phones...