“Porsche The 4-Cylinder, 4-Cana Sports & Racing Cars” by Jerry Sloniger. 122pp. 8 1/2 x 11″ (Patrick Stephens Ltd., Bar Hill, Cambridge. CB3 8EL. £7.50.) Really, one would have thought that so thoroughly has the Porsche theme and history been covered that there would be no room for another book tm the subject. However, for those seeking particulars of the specialised versions with which Sloniger’s soft-cover landscape-page book deals here is a chance to obtain excellent coverage, photographs and diagrams, not to overlook the Specification Charts for 550-Works, Production 1954, 550-1100-550A-1500RS, Mickey Mouse, 718RSK-1958, 718RSK-1959, RSK 1600, RSK 1700, RS60/611500, RS60/61 1600, 1605 Le Mans, RS60/61 1700, RS61 1700, 2000, 718 F2, F2 and F1 cars I quote to indicate the scope of this book which goes on to the Speedster 356 to 904 models at a competitive price. The 150 or so pictures are very well reproduced. -W.B.