Romance Series Lists discussion

Question...what's the story on Linda Howard's Mackenzie books?

I looked them up and fantasticfiction lists the order as:

Mackenzie
1. Mackenzie's Mountain (1989)
2. Mackenzie's Mission (1992)
3. Mackenzie's Pleasure (1996)
4. Mackenzie's Magic (1996)
5. A Game of Chance (2000)

...but the dates are sequential there. Is that the correct order? If it is, I'm guessing that it was something where she wrote some books, then decided to write one that took place before them...

Anyone know? Thanks!

Isis,
That was the list I found too on another site. She really doesn't have a website that I could find.