Tomorrow's Math: Unsolved Problems for the Amateur

I have a large inventory of children's books, cookbooks, collectibles, classics, first editions, signed books, history, biographies, science, textbooks, and more. Each book to me is a "precious jewel" and I try and describe it, giving you a good understanding of its content, and also its condition. One example, I have a John Muir book where he has written in the margins all through it to correct mistakes made by the publisher. (this was confirmed by John Muir historic site for me) I have over 50,000 books and some are quite rare from 1800's to 2020's. I've been collecting books for over 50 years and now am a spry 80 and going strong. I try and get books out same day as order comes in and love it when someone writes that they's been looking for a book for years and finally found it with me!