He even goes so far as to mention it and shows a copy of the book in his first video:
I stumbled across the book 4 years ago when I followed this instructable:
The instructable is nowhere near as detailed as Ben's videos, but it was all I had at the time, and it recommended that book. Note: when I purchased the book 4 years ago, it was only $5, now I'm seeing it for upwards of $99:
The paperback is only $22, but it lists an additional author not present on the 1977 version, so I don't know if it's the exact same book.