What is the best book out that gives you good details on how to build your own telescope?

I'm not sure about which book would be the best. But, you might like to check out the following sites. I know that a book or books are mentioned on them. I note that a book by Richard Berry appears to be popular.

Build Your Own Dobsonian Telescope

Build Your Own Telescope

Exploratorium Magazine: Build Your Own Telescope

Amazon.com: Build Your Own Telescope: Books: Richard Berry

build your own telescope - Google Search