Yes I liked David's book, but I think I got more out of it after listening to him talk, and so understanding how he describes things. For me it was worth it.
here's the links to the Tyler images on my website, and to his sister's painting as well:
www.heirloomportraits.net/woa_tyler.
http://www.heirloomportraits.net/full_tyler.htm
www.heirloomportraits.net/woa_mallory.htm
www.heirloomportraits.net/full_mallory.htm