I have finally got around to scanning the print set for the DEC ME11-L memory expansion unit and you can find it at https://archive.org/details/dec-me-11-l-core-memory-system-engineering-drawings/
The quality is acceptable given that the office supplies shop where I (DIY) scanned them on an A3 scanner only allowed output as JPEG or PDF (undoubtedly wrapped as JPEGs inside) so I thought there was no point degrading any more than necessary with editing the JPEGs to another format just to re-save them. I just bundled the raw scanned pages as-is and it looks fine. There's also some miscellaneous fragments for the M7050, M715 and M840 module drawings which came with the ME11 set. Steve.
