Firefly Hollow Universe
(in chronological/reading order):

 

9. Fern Valley

10. Pinecone Trail 

11. Snapdragon Way (Firefly Hollow Generations #1)

12. Stardust Valley (Firefly Hollow Generations #2)

13. Murky Pond (Firefly Hollow Generations #3)

14. Burning Springs (Firefly Hollow Generations #4)

15. Letters from Owen (Firefly Hollow Snapshots #2)

16. Willow Creek (Firefly Hollow Generations #5)

Olman County Series
(formerly known as Shadows/Leroy’s Sins Series):

 

I. Ronik
No set reading order – Reader’s Choice!