Air Cool VW (Beetle)
How to Build a Dune Buggy by Earl Duty
This is actually about building a Sandrail. I have not read through in detail, but it looks great. It has a large number of black and white photos. Earl covers how to build what we now call a "rail" or "sand rail". He's a very practical kind of guy, and from what I've seen, his recommendations are solid, and he covers the nitty-gritty details that can drive you crazy if someone doesn't mention them.