Latvia. Lettish people from Lyutsinsky district of Vitebsk Provinces.
The government of Vitebsk (Russian Витебская губерния / Vitebskaja gubernija) was an administrative unit of the Russian Empire. Today the territory is mostly part of Belarus, the north-western part is to Latvia and the north and east to Russia.
Сборникъ антропологическихъ и этнографическихъ статей о Россіи и странахъ ей прилежащихъ, издаваемый В. А. Дашковымъ.Vasily Andreevich Dashkov. Москва 1866
Source: Collection of anthropological and ethnographic articles on Russia and the countries adjacent to it, published by Vasily Andreevich Dashkov. Moscow 1866.