I believe the book is "Gardens of Revelation"....

On Fri, 31 May 1996, Eric Siegel wrote:

>    Hank:
>
>    Have you ever seen the book called Visionary Gardens, (or something
>    like that) It came out recently, and is a respectful, serious, and
>    well-written book about all of these stone, tinfoil, bottles,
>    concrete, etc backyard sculpture gardens that pop up around the world.
>    Really wonderful stuff.  If yr interested (and I'm not sure if you
>    read books as well as go to museums and chew/spit nails...;^)) I can
>    get the cite from home.
>
>    Eric Siegel
>    [log in to unmask]
>