alt Hacker NewsGood read! How many pages of text were in scope? I'm not sure if the 1615+1629 pages were the total or just a subagent.
If they were the total I would say it was arguably more impressive the author was able to narrow it down to just 3000 pages than it was to find the dodo mention amongst those!
Those are years, not page counts, right? The article mentions "millions of records", but I'm not sure how big a record can be.