I have the whole Lonesome Dove saga in my digital library. I've watched all of them but t was years ago so I don't remember them too much.
Here's all 5 series in chronological order.
1. Dead Mans Walk (1996) - set in the early 1840s
2. Comanche Moon (2008) - set in the 1850–60s. the teleplay was co-written by author Larry McMurtry and Diana Ossana.
3. Lonesome Dove (1989) - set in mid-to-late 1870s
4. Return to Lonesome Dove (1993) - set in mid-to-late 1880s
5. Streets of Laredo (1995) - set in the early 1890s