salt lake city - genealogists dream!
(ps having done this 4 11 yrs, i'm sure that you know your way around, but beginners will read the posts for clues as how to proceed )
and i am sure that you are familiar with www.jewishgen.org, under the onslaught of hurricane rita in texas right now, but full of invaluable info for hunting ancestors in the slavic and other european countries and with the most wonderful system of locating ellis island records, inclding the "lost' ones