the best single source for dha pictures that I know of in general publication is Punjabhan, Naengnoi, "Silverware in Thailand," ISBN 9748869563. There are some pictures from it on
this thread, courtesy of dha investigator extraordinaire Dan Wilke.
And not to beat my own drum, but the largest single collection of dha photos on the web is on my web site
The Dha Research Index (I thinK I have more than are in Artzi's archives at
Oriental-Arms).