Continuing what has turned out to be Napoleon Hill Day here, I tried it for Think and Grow Rich (print edition):
That will be hard to see even enlarged. Hill’s book is in the red circle and it links to all those other books — according to what others have bought.
A closer view:
Hovering the pointer over the book shows the primary outgoing and incoming links in yellow.
To use it, it’s best to have a mouse with a scroll wheel to zoom in and out. Also click-drag to move around it.
Those of you with very large monitors should have more fun than I did.