Aware is finished. Now for something different

So I finished presenting the book Aware on my substack, which will now ferment in my bottom drawer (metaphorically) until it ripens. While that is happening I am preparing to edit some nineteenth century sources for discussions of classification, taxonomy, species, higher and lower taxa, and many other subjects. Does anyone have any requests for hard-to-find sources they would like to use in teaching? Mostly Anglophone, and reaching from the 1770s or so to the beginning of the Great War. Answer in comments or direct in email.