A couple years ago I was trying to get ahold of Michael Spivak's Differential Geometry series. It was impossible to find copies of the book without paying 4 fi

A couple years ago I was trying to get ahold of Michael Spivak's Differential Geometry series. It was impossible to find copies of the book without paying 4 figures on sketchy listings off eBay, Craigslist, Amazon, or AbeBooks. Eventually I decided to dig around and see if I could contact him directly. When I found his contact info, I kindly wrote him an email, to which he took several months to respond. After several months of waiting for a reply, he surprisingly responded to me several months later. We continued to communicate and I sent payment to him via PayPal, and received the books. It was only a few months later that I found out he had passed away. I just found out, per a PDF on tug.org, that "he suffered a broken hip earlier in the fall, and had been confined to an extended care facility following that mishap."[1] Very sad to see him go, but I am forever grateful that he took the time to patiently work with me to obtain copies of his books. Today, his books are all available at mathpop.com, it seems the distributor got the series hooked into Amazon so they're more easily accessible. [1] https://tug.org/TUGboat/tb42-3/tb132beeton-spivak.pdf https://tug.org/TUGboat/tb42-3/tb132beeton-spivak.pdf