One of my former co-workers recently published a Book through Amazon titled Essays on the Lord of the Rings. Having read a couple of them, I have to say that he has quite the interesting perspective.

Essays on the Lord of the Rings
Patrick McEvoy-Halston
Independently Published
Copyright Date: April 10, 2017
978-1521032213

The amazon.com product description:

Series of essays on The Lord of the Rings, including two "reader's guides," as well as a foray into the fictitious possibility -- What if Saruman was right? The lead essay focuses on how LOTR is best understood as actually more anti-adventure than adventure; on how it never really lets you get too far outside your door, even as you find yourself amongst things as wondrous as Oliphants, wizards, Orcs and Elves. Think of this book as an attempt at good counsel so you don't go adrift to the unexpected wiles of J.R.R. Tolkien's masterpiece.