This is one of the better history books I've read. It a nice read of the challenges involved with creating something that had never been created at the time ... an opposed, water cooled, shaft driven m/c. If I recall, the engineers had to fight with Mr. Honda because he wanted it to be a 2-stroke. It was originally a 6-cylinder engine, but they didn't think a 6 cylinder would sell, thus the early 4-cylinders. Also, Honda didn't have a drive shaft. At first they used a BMW one until they designed their own. The drive shaft alone took them like 2 years to get to a final design. I'm sure you will find it an interesting read too. Honda used to give these books away for free at their yearly factory event. This books history is from generation 0 thru 4. If you google GoldWing history books, you'ill find a couple of other history books.

https://www.amazon.com/Gold-Wing-Fir...4C7ANYJPY6HBH9

You can also read here, but this more of a linear history from model to model less all the engineering struggles of getting there.

http://world.honda.com/GoldWing/history/