I just came across a site which contains some very compelling hand-drawn graphics, which remind me of high school science course material that I am familiar with circa 1868.
It seems to go along with the free-thinking enlightenment of that age that we rarely hear about.
It seems a mix of is thought-provoking and illuminating.
https://www.flickr.com/photos/esaruoho/albums/72157626295305419>I haven't been able to find a website that discusses any of it.