I think he did his doctoral dissertation on it. (He teaches writing at UC Boulder now.)
I've given it to my brother and another friend of mine over the years. One liked it, the other didn't.
I was delighted to learn the other day that a book I've been wanting to get for a long time is back in print.
It's called "Notes on Blood Meridian" by John Sepich.
It is a comprehensive look at McCarthy's book. The real histories of many of McCarthy's characters are examined. There's a map of the locations named in the novel.
In addition, the literary, mythic, and cosmological allusions are itemized, discussed, explained, and indexed. And, all of the non-English dialogue is translated.
I can't wait to get into it.
http://www.amazon.com/Notes-Meridian-Southwestern-Writers-Collection/dp/0292718217/ref=sr_1_1?ie=UTF8&s=books&qid=1251273921&sr=1-1Preface
INTRODUCTION
The Problem of Information--1; Three Sections--4; Scalp Hunting and The Glanton Gang--5; Indian Haters--9.
BIOGRAPHIES
Reverend Green--13; Judge Holden--14; Captain White--24; John Joel Glanton--27; Albert Speyer--42; Consul Bennett Riddells--44; Governor Angel Trias--45; Grannyrat--46; Bathcat--47; Mangas Colorado--48; Sarah Borginnis--51; Yuma Chiefs--53; Callaghan--56.
ADDENDA
Leonids--57; Comanche Attack--61; Ciboleros--66; Hueco Tanks--68; Jesus Maria--68; Wild Bull--70; Meteorite--71; Fort Griffin--72; Chamberlain--74; Ruxton--76; Audubon--81; Bartlett--84; Wislizenus--88; Hughes--94; Reid--96; Dobie--97; Ober--98; Bourke--99.
ESSAYS
Tarot and Divination--105; Judge Holden's Gunpowder.
APPENDICES
A: Massacre Accounts--129
B: Concordances: Narrative Voice--141; Hallunicatory Void--142; Wolves--145; Apes--146; Blindness--146; Celestial--148; Marine--151; Carnival--152; Religious--154; Smiles and Laughter--159; Egg and Dome--161; Ritual, Music and Dance--162; Fools and Crazies--163; Chance, Fortune, and Deception--164.
C: Languages: Spanish--167; French--171; German--171.
D: Map Citations--173.
BIBLIOGRAPHY--175
INDEX--187