Comment 2 for bug 1738385

Well, you can use whatever PDF book and the result will always be the same.

However, I've attached the first one I've found on Internet; it is called "Think Java", published under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License and it's available on http://greenteapress.com/wp/think-java/

Here is another PDF file, official Kindle Paperwhite User's Guide, for which all ToC is flatten if you convert it to e.g. epub format: https://s3-us-west-2.amazonaws.com/customerdocumentation/EC/Kindle_User_Guide_EN-US.pdf