Article by Sam Reader for the Tor Nightfire blog and including books by Joe R. Lansdale, Stephen Graham Jones, and The Silverberg Business.
“Wexler uses the history of Texas (in particular the 1900 Galveston flood) and a series of repeated images and motifs to build his own original mythos, one where the eldritch forces of chaos and decay attempt shady land grabs and the wrong door can send you into a bizarre alternate dimension.”
I haven’t read any of these other books but will get started soon. The article is here.
Laconic Writer 
Just finished The Silverberg Business. Reminded me of an old folk song: “The Galveston Flood.” Best known recording by Tom Rush, though I picked it up from his mentor Eric Von Schmidt (dates me).
Thanks for posting. I only heard the song recently.