Absolutely no other Porsche book can compare to this! It is the grand daddy of them all.This is considered close to if not "definitive".
Porsche: Excellence Was Expected
The Comprehensive History of the Company, its Cars and its Racing Heritage
by Karl Ludvigsen
Hardcover, 9 1/2 in. x 10 1/2 in.
Three volume set in slipcase, 1,688 pages
1854 color and b/w photos/illustrations
I have this on my library There was another encyclopedia launched recently by David Bull that seems very good also, another back breaker:Absolutely no other Porsche book can compare to this! It is the grand daddy of them all.