Classic Grand Prix Cars: The Front-Engined Era 19... by Ludvigsen, Karl Hardback

Vintage Classic Grand Prix Cars - By Karl Ludvigsen - 2nd Edition

Indy Cars of The 1960s by Karl Ludvigsen Automotive Racing History

V12 Engine : The Technology, Evolution and Impact of V12 by Karl E. Ludvigsen

The Mercedes-Benz Racing Cars by Karl E. Ludvigsen (No Dust Jacket)

Classic Grand Prix Cars: The Front-Engined Formula 1 Era 1906-1960 by Ludvigsen

Classic Racing Engines : Design, Development and Performance by Karl Ludvigsen