This is quite a treasure trove, thanks for posting!

I kind of fear that there is an ongoing degradation of various information/knowledge sources on the Internet, with the constant attacks on Wikipedia, and other archive sources. I suppose it's inevitable given we're in the information warfare era, and also amplified with the capabilities of LLMs.

Not to be missed the whacky endearing doodles by his kids on his manuscripts

https://www.newyorker.com/tech/annals-of-technology/slide-sh...

Another source, in various formats:

https://standardebooks.org/ebooks?query=darwin&sort=default&...