Hi DNSB,
I don't understand what your interest is in knowing which ebooks I have and where I got them from. In any case I can tell you that they have all been legally collected and that they are (in addition to all the publications of my research institute and CERN), all the Latin, Greek and Italian classics that I managed to find and all the scientific publications on topics such as geology, physics, astronomy, biology etc. found on dozens of sites sites such as:
https://www.academia.edu/
I hope you can sleep better now ...