Dave, here is a copy of the list I did a while back of all of the Cobra books I'm aware of, along with a couple of links to sellers who might have used copies in stock:
-Essential AC Cobra, by Rinsey Mills
-Original AC Ace and Cobra, also by Rinsey Mills
-The SAAC World Registry, editions One and Two
-AC Cobra 1962-69, a Brooklands book compiling old road tests and magazine articles
-AC Cobra Gold Portfolio, another Brooklands compilation
-Cobra, the Complete Story, by Brian Laban
-Automobile Quarterly vol 14-3, which has a Cobra article
-Automobile Quarterly vol 16-3, which has a Shelby article
-Automobile Quarterly vol 22-3, which has a great article on the 427 cars
-Carroll Shelby's Racing Cobra, by Friedman and Christy
-The Cobra Story, by Carroll Shelby
-Ford Cobra Guide, by Bill Carroll
-Road and Track on Cobra, Shelby, and Ford GT40, another Brooklands compilation
-Shelby American Guide, by Rick Kopec
-Shelby's Wildlife, by Wallace Wyss
-Daytona Cobra Coupes, by Pete Brock et al.
-Cobra: The Real Thing, by Trevor Legate
-Shelby Cobra, by Dave Friedman
-Remembering the Shelby Years, by Dave Friedman
-The Cobra-Ferrari Wars, by Mike Shoen
-Cobra Super Profile, by Grainger
-Cobra, by Beki Adam
-Classic AC's, by John McLellan
-AC Heritage, by Simon Taylor
-Shelby, by Steve Statham
-AC (Cobra) Autohistory, by F. W. McComb
-Shelby Buyer's Guide, by John Lamm
Many of these are long out of print; the best source I've found for them is found at http:
www.abebooks.com/home/TEW/
The in-print ones can usually be found at
www.motorbooks.com or
www.ewa1.com
This obviously doesn't cover GT40s, just Cobras. The GT40 books I'm aware of off the top of my head are Ronnie Spain's book; "Shelby GT40" by Dave Friedman; "The Inside Story of the Fastest Fords" by Karl Ludvigsen; the new Trevor Legate book titled, somewhat creatively, "GT40"; "Road & Track on Cobra, Shelby, and GT40"; and "Ford GT40 Photo Archive", a small softcover book published a couple of years back. I'm sure there are others; those are what come to mind right now.
In addition to the Falconer and Friedman books on Chaparral, Ludvigsen just published a softcover photohistory this year called "Chaparral--Can Am Road Racing Cars from Texas", and there is also a really nice, Japanese-text photo essay on the cars called "Chaparral: The Texas Roadrunner" that was published in very limited quantities several years back.
And yes, I have all of these in my library and no, they're not for sale...
, in spite of my wife's wishes to the contrary.
SS Bob