The book under review is the latest title in the Blue Series no 6; OH-6 Cayuse, Hughes H-500 variants from Wings and Wheels publications, RAK, P.O. Box 35, 17006, Prague 7, Czech Republic. The authors are Frantisek Koran and Jaroslav Spacek, ISBN no is 80-86416-21-6, and the price varies from country to country, so please check with your local book dealer. Printed in the now very usual landscape format and in full colour and English text, this book has 54 pages crammed full of 169 photographs and the accompanying text is concise and kept to the absolute minimum. The book follows the now familiar layout of sub chapters dealing with all the relevant details. I.e. starting with the history of the helicopter, engine, body, cabin internal’s, fuselage and rotor, and weapons fit etc. The variants and countries that use this helicopter here are a few, U.S., Brazil, Columbia, Honduras, Taiwan, and Israel, the variants to pick out a few are as follows, H-500MD Defender, NH 500MD, H 500M, OH 6a. With this book you will not only be able to enhance your models but it shows the correct national markings and the placement of the warning decals used by the various countries. My own comments are as follows if this helicopter is part of your modelling theme , then you cannot afford to do without his excellent reference book as usual it give all the tiniest details in full colour and the level it goes down to is breathtaking. With this book as reference alongside the kit you can very easily build a truly staggering model and enhance it to championship standards.