Daugavpils Jewish History
The Jewish Community of Dvinsk (Daugavpils) - by Constance Whippman (following the database description, scroll down a few screens)
A comprehensive Latvia History
bibliography may be found at Jewishgen.org’s Latvia
are selections from that page with abridged descriptions.
v Daugavpilse : istoricheskie ocherk
The best book about Jews in Daugavpils (Dunaburg/Dvinsk).