I have added a very nice list of the 1837 merchant's families
of Jacobstadt to my Jekabpils shtetlinks page.There are not many families
but enough for you to find interesting if you have family who came >from there.
http://www.jewishgen.org/shtetlinks/jekabpils/jekabpils.htm

Hope you are lucky and find some of your family in the list.
Arlene Beare
President Latvia SIG