Other books I strongly recommend, some of which are probably out of print:
The Last Open Road, by Burt Levy
Montezuma's Ferrari, also by Levy
The Fabulous Trashwagon, also by Levy (the third book in an historically-based series of novels dealing with road racing in its infancy in America in the early Fifties--great reading)
Pro Sports Car Racing In America 1958-74, by Friedman
American Road Racing Specials, by Allan Girdler
American Sports Car Racing in the Fifties, by Parravano, Edgar, and Lynch
By Brooks Too Broad For Leaping, by Denise McCluggage
Can Am and Can Am Photohistory, both by Pete Lyons
Corvette Grand Sport, by Lowell Paddock
Italian Sports Cars, by Winston Goodfellow
Scarab, by Preston Lerner
The Fabulous Fifties, by Art Evans
Archie and the Listers, by Robert Edwards
Time and Two Seats, by Janos Wimpffen (an exhaustive history of every FIA-sanctioned race up to around 1998)
The Best Damn Garage in Town, by Smokey Yunick
Chevrolet = Racing?, by Paul Van Valkenburgh
Ford: The Dust and the Glory, vols. 1 and 2, by Leo Levine
Again, these are the ones that leap to mind. Some are histories of specific marques, some are overviews of an era, some (like the McCluggage book) are poignant essays about the personalities of a different time. You guys feel free to add to the list. I expect a book report on my desk by next Thursday!
SS Bob