330 books • 32 series
Book #1: The Railway Series No. 1: The Three Railway Engines
Book #4: The Railway Series No. 4: Tank Engine Thomas Again
Book #5: The Railway Series No. 5: Troublesome Engines
Book #7: The Railway Series No. 7: Toby the Tram Engine
Book #8: The Railway Series No. 8: Gordon the Big Engine
Book #2: A Thomas the Tank Engine
Book #3: James the Red Engine
Book #5: Troublesome Engines
Book #10: Four Little Engines
Book #13: Duck and the Diesel Engine