Check Out A Plethora of Olympic-Related Books On Bookshop.org
And, thanks to Bookshop.org, Games and Rings has a dedicated roundup of many (many) of them. Historical accounts of the Games, (auto)biographies of star Olympians, critical assessments of Olympism, children's books to get kids inspired, or general sports fun...there's a book out there for every level of fan.
Bookshop.org's mission is to "help local, independent bookstores thrive in the age of e-commerce", and works with an international network of independent booksellers to sell books to consumers in a manner that supports profits to local bookstores.
Take a look at the Games and Rings page on Bookshop.org, and get shopping!
p.s. Let me know in the comments any other titles that should be added to the page.