Might as well get this over with right now - THE BEST MUSHROOM BOOK I HAVE READ!!!!
OK, I'll admit it - the Silver Wings era is my favorite, and in that, the Gamecock is high on my list - so I'm a bit prejudiced. But this book is much more than I expected - it is very well written, very well organized, and very well illustrated. The Grebe and Gamecock are 1920's aircraft; built in small quantities, never saw action - so there simply isn't that much around on them. The author has gone to great lengths to dig out that information and then cover it in a complete and well-organized manner.