I recently received an offer >from Halbert's of Bath Ohio for a special book on
my family surname for $38.95. It promised sources of information on my family
name by searching hundreds of millions of data records. When I received it, 99%
of the information was generic boilerplate and 1% of it was Kaminker names and
addresses >from around the world. The information they provided was not even
what most people can get >from surfing the net. They did not even have me or my
parents who are both listed in US directories.
Basically, I would not recommend its purchase.