I run the Liverpool in Europe website lfcineurope
It is dedicated to Liverpool's history in European competition from 1964. There are full statistics for each match, including line-ups, goal scorers, and substitutes. Click on the red button beside the word Liverpool to see a slide show of the players. Click on an individual player to see their profile.
For each match, the website includes a scan of the front cover of any programmes that were issued plus a scan of the ticket. There are still some scans missing - see Notes page. I would be grateful for any assistance with the scans that are missing. Eventually, I hope, the site will become the definitive guide to Liverpool in Europe.