There is also an article in a hobbist (Native American) journal from the
late 1960,s (I think). Unfortunately I can not remember the title of the
journal, but I think the author was Norman Feder. The article is on
Southern Plains German silver work and includes some details and interviews
with native silversmiths still working in the 1st 1/2 of this century...If
you are interested I can get more information when I am back at the office....