I have historical rankings for all major list pages (/news, /news?p=2, /active, /best, /classic, etc) since 2014-05-05, if it's helpful. Currently 27MM records.

Sounds like it might be useful for getting the front page archive to back that far. Can you email us at hn@ycombinator.com?

Maybe you could complete your data with what would have been scrapped / archived at the time. Though I don't know if there's such a dataset for this timeframe (pre Nov. 2014)

Bummer. Oh well. :)