Looks like 27 chapters,  Electrical Wheels Axels Bearings Springs Shocks Frames Shocks Steering Ignitions Clutches Transmissions     Cooling Manifold Carburetors Crankcase Crankshaft Rods Cam Valves Cylinders Pistons Engins Construction.  About 2" thick             7 1/2" x 9".  Not all chapters not in exact Numbered order. It seems to be complete to me.