For anyone out of the loop, this week a massive new internet archive was released this week, and an intrepid redditor with an interest in lost media found what is almost certainly the original 173 thread.
Today, another group of redditors decided to look through the archive to try to find the original versions of a lot of the oldest SCPs, to find authorship of some of the unattributed works, and threads that seem to be pivotal in the foundation (no pun intended) of SCP. This thread is here.
There's already been a lot of good info found, most pertinently being that we now have solid attribution for SCP-011 and 109. Shaggy has already updated the metadata to credit the original author.