It's all scripted. Google books and archive.org have been great resources.
There's also a couple torrents of 17th-19th c. journal articles. I've made my own sqlite databases from the meta information and ran ocr over them to make things searchable.
I'll be putting more of these tools in the repo and eventually put the search systems online for the general public. Google's navigation of annualised volumes is a joke so I'm going to do better.
My dream of dreams is to be able to automatically hyperlink the footnotes in the old texts. I think it's possible, long term project though. (Example: https://play.google.com/books/reader?id=c3QgKCXX4nIC&hl=en&p...)
I've also cleared out a closet and installed acoustic foam. I tested a number of microphones... I'm sure acting like it's a real thing. Hopefully I'll keep at it.
The hardest part has been trying to get it done on a weekly schedule. I don't have this week's done for instance. There's two parts I really want to fit in and I need to find a place for them. I'm going to try to take a nap and get up in an hour or two and work a bit more.
I don't know if I'll be able to pull the weekly schedule off honestly. I'm going to try to sweat it out a bit longer and hopefully I'll get faster as I accumulate more notes, references and materials.