This high quality hardcover volume represents a testament to the knowledge and dedication of my late friend and colleague Jim Dunkin of the USA. It contains full colour images and basic information relating to just about every 2.5 cc / .15 cuin. model engine which has ever been made anywhere at any time. A total of 1648 different models from 36 countries are covered in the book's 460 pages. Given the International status of this displacement as well as its enduring popularity among sports fliers, some of the most historically significant engines of them all are included here.

This highly-recommended book represents a stunning effort by Jim, who went to what must have been an endless amount of trouble to secure pictures and basic information on this incredible collection of engines, many of which are extremely obscure. The book is now out of print, but copies will doubtless turn up periodically on venues such as eBay. Anyone having any interest at all in the model engines of the world in general and the 2.5 cc offerings in particular will find this book invaluable.