With Rose Styron, he edited the Selected Letters of William Styron.
One of Gilpin's favorite collections of correspondences, as told to The Daily Beast:
The Correspondence of Shelby Foote & Walker PercyRead about the other entries on the list.
Edited by Jay Tolson
As a historian of the South, it just does not get much better than this! The syrupy drawl of Foote (which was captured at its most hyperbolic in Foote essentially narrating Ken Burns’s Civil War) interfaces with great depth, friendship, and humor with his lifelong friend, the novelist Walker Percy. These guys really get into the nuts and bolts of writing (outlines, drafts, critiques of each other’s work), the economic realities of being a writer (grim, struggling, wanting more), and what it means to be from the South and write about the South (pride and prejudice).
Also see: Frederic Raphael's five best books of notable correspondence by eminent men.