A word about the quality of Melville Davisson Post's writing (which a reviewer here refers to as "mediocre at times"). While I cannot appraise the prose style of the Randoph Mason stories, having not yet read them, I know the Uncle Abner tales well. And based on them, I can say with confidence that as a literary stylist Post is nothing short of superb, and often wondrous.
Hewn out of the rock of the "western Virginia hills" (the stories' temporal setting preceded the creation of West Virginia), dipped in the wellsprings of the King James Bible, and rendered with sure-handed rhythm in a decidedly elevated literary style that is, yet, also marked by simplicity and directness--his prose is a masterwork.
A small sample (opening of "The House of the Dead Man"):
"We were on our way to the Smallwood place--Abner and I. It was early in the morning and I thought we were the first on the road; but at the Three Forks, where the Lost Creek turnpike trails down from the mountains, a horse had turned in before us.
"It was a morning out of Paradise, crisp and bright. The spider-webs glistened on the fence rails. The timber cracked. The ragweed was dusted with silver. The Sun was moving upward from behind the world. I could have whistled out of sheer joy in being alive on this October morning and the horse under me danced; but Abner rode looking down his nose. He was always silent when he had this trip to make. And he had a reason for it."
Jewels like this are to be found on almost every page.
(I leave to another time consideration of Post's sense of history, of the play of political power, of the hierarchies and tensions of the rural society he depicts, all deftly conveyed in the stories; and the often brilliant plotting, magisterial use of suspense; and other virtues.)