Public domain
Mashina dli︠a︡ shlifovki i polirovki kamneĭ. [Imperatorskoĭ Granilʹnoĭ fabriki︠e︡. Ekaterinburg
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineMashina dli︠a︡ shlifovki i polirovki kamneĭ. [Imperatorskoĭ Granilʹnoĭ fabriki︠e︡. Ekaterinburg. 1910-01-01. Prokudin-Gorskiĭ, Sergeĭ Mikhaĭlovich. Prokudin-Gorskii Collection, Library of Congress. Public domain.