A major new initiative for Thomas - a huge collectable series of 50 books, each title featuring a different engine. First 10 titles publishing in September 2003, 'Thomas', 'James', 'Donald and Douglas', 'Toby', 'Skarloey', 'Mavis', 'Bulgy', 'Terence', 'Cranky' and 'Elizabeth'. Then five each spring and autumn until 2007.