Yannay Spitzer, Pogroms, Networks, and Migration: The Jewish Migration from the Russian Empire to the U.S. 1881-1914.
Yannay Spitzer is an assistant professor in the Department of Economics at Hebrew University in Jerusalem.
https://yannayspitzer.net/about/
Mr. Spitzer hosts two webpages relevant to the study of Jews in Eastern Europe:
http://yannayspitzer.net/2012/09/30/jewish-occupations-in-the-pale-of-settlement/
http://yannayspitzer.net/2012/07/22/a-new-map-of-jewish-communities-in-the-russian-empire/
Thanks are due for the author's permission.