EBSEES: 3 hits for Latvia / German Occupation, 1941-1944

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Latvia / German Occupation, 1941-1944 provides 3 hits
1	Die Nationalsozialistischen Pläne und Propagandamassnahmen im Generalbezirk Lettland 1941-1942 Kangeris, Karlis, in: Collaboration and resistance during the Holocaust: Belarus, Estonia, Latvia, Lithuania, eds.: David Gaunt ... [et al.], 2004, pp. 161-186, ill.
2	Collaboration in German-occupied Latvia: assessments of the historical literature Zunda, Antonijs, in: Collaboration and resistance during the Holocaust: Belarus, Estonia, Latvia, Lithuania, eds.: David Gaunt ... [et al.], 2004, pp. 111-126
3	The portrayal of Soviet atrocities in the Nazi-controlled Latvian-language press and the First Wave of antisemitic violence in Riga, July - August 1941 Kott, Matthew, in: Collaboration and resistance during the Holocaust: Belarus, Estonia, Latvia, Lithuania, eds.: David Gaunt ... [et al.], 2004, pp. 127-160

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

Die Nationalsozialistischen Pläne und Propagandamassnahmen im Generalbezirk Lettland 1941-1942

Collaboration in German-occupied Latvia: assessments of the historical literature

The portrayal of Soviet atrocities in the Nazi-controlled Latvian-language press and the First Wave of antisemitic violence in Riga, July - August 1941