Dataset - Sample pdfs for text processing? I'm looking for a rather large amount of pdf files for testing my text processing program. Tried looking for an open site to get like some thousand pdfs, but wasn't able to find anything. I don't really know if that is the right place to ask (probably not) but maybe one has a good tip for me.

Thanks in advance.
A GitHub repo with ~1,000 pdfs is here.

Another GitHub repo has a corpus of pdf examples, including edge-cases, is here.