There are several cruising guides and mile-by-mile books listing details on the Great Loop and other inland cruises. These can be quite detailed, or less so, but most cover such things as fuel, maintenance and moorage availability, interesting "local" facts, tips and hints about the area.

Some cover the "entire loop" and others specialize in certain locations. Be aware that keeping one of these up-to-date is beyond a full time job, so especially printed versions may not have the very latest. Check water depths, shoaling, bridge opening times and the like… don’t just believe the book.

Also, these books are not replacements for proper charts!

One very well regarded example is:

Mark and Diana Doyle have lots of guides and electronic charting information at:

Another source:

Of interest if you’re reading there are a couple of online versions that people have available:

Another source of several publications