The following link is to a website for Collyn Rivers books. 

I am told this guy is the go to person for info on all sorts of subjects to do with Caravans/RV's Solar etc.

Looks like a good place to find out about all sorts of subjects.

Since it is a link to a webpage the copyright aspect should be OK.

http://caravanandmotorhomebooks.com/

Nice motorhome on the front cover of the "Campervan and Motorhome" book.

Cheers,
Peter