Vqdave mentioned he was off to Reims soon.
I've just ordered this book that I saw reviewed in the Telegraph Motoring section a while back.
Autodrome: The Lost Race Circuits of Europe
http://www.amazon.co.uk/exec/obidos/ASIN/1904788319/202-8817505-9043815?%5Fencoding=UTF8Here's the synopsis, circuits covered are AVUS, Masaykring, Nurburgring Sudschleife, Brooklands, Crystal Palace, Keimola, Montlhery, Monza and Reims.
Around Europe lie a number of long forgotten monuments, windswept and abandoned, the derelict buildings and crumbling tarmac are all that remain of once great motor racing circuits. From the great speed bowls of Monza and Brooklands, to the parkland of Crystal Palace. All photographed as they are now, but remembered in their prime. Nine of Europe's greatest abandoned circuits recalled and revisited;Previously forgotten events remembered;Track diagrams help chart the history of the autodromes;Many unique and unpublished period photos, as well as program covers and event posters;S.S.Collins' writing captures the spirit of these forgotten places;Photography by Gavin D.Ireland evokes the faded glory of the 'lost circuits'. A steal at just over £23 from Amazon (on offer)