Ethnographer? It’s a person who makes a systematic study of a people and its culture, a subdivision of anthropology, sociology, history and geography all at once.
Milan Karanovic, trained as a priest, studied folk and cultural trends of Bosnians, roughly from 1900 to World War II.
And this is his typewriter:
Milan Karanovic was born in 1883 in Great Novljansko Rujiška. In his teens he moved to Sarajevo, graduated high school and attended seminary, graduating by 1909 and assuming duties as a parish priest (Orthodox?) in the Krajina region village of Rujnić. We know he published a study of the “village” of Sarajevo in 1907. On the wrong side of local authorities in World War I, he spent much of the war in prison. His publications resumed by 1925, and proliferated through 1937. He died in 1955.
The typewriter is an Optima Elite. I’m guessing this model was made during or after World War II; Optima used the Olympia name into World War II. After the war, Olympia factories in the zones controlled by the Soviet Union changed to Optima. Judging from photos, this machine may have been built in the 1950s, giving Karanovic only a few years to use it. I’m open to the idea that the Optima name was used earlier — this history of corporations and machines is out of my range. If you have better information, please feel free to contribute in comments.