Looking for these titles:

https://www.amazon.com/dp/1468171119/?coliid=IQ8ZJ5Q0VTHVC&colid=2CKB7I9ZHV8GR&psc=1&ref_=lv_ov_lig_dp_it

https://www.fea-academy.com/index.php/book-store

https://leanpub.com/beautiful-spark

https://waxworksmath.com/Authors/G_M/Kuhn/kuhn.html

If any chance please DM. Thanks.