"See also" (from the legal blue book) seems like a natural indicator. As applied here it could be as simple as:

<<

See also:

https://news.ycombinator.com/item?id=23145592

https://news.ycombinator.com/item?id=23130674

...

https://news.ycombinator.com/item?id=23126517

>>

The links already indicate that the pointers are to previous Hacker News threads, so no need to specify that part. If you want to use you "from the archives" language it could be something like "see also from the archives"