Lonesome Dove

One of my favorites - I've lost count of how many times I've read it. Fabulous characters. Great story.
If you're jumping in to this one - be advised until they get the cattle moving it's a bit slow - just hang in there.
I enjoyed the first bit much more the second time through the book because I was so familiar with the characters.

2017 - reread by listening to the audiobook. This is still one of my favorite reads. Westerns are not my genre of choice - but this one is a great character study of two old Texas Rangers and the people they work with and encounter on their 3000 mile cattle drive to Montana. If you only read one western - it should be this one.