Leningrad Region State Archive in Vyborg (LOGAV)
F. 280 Office
of Postal and Telegraph Inspector of Vyborgsky Circuit. Town Vyborg
F. 281 Office
of Postal Inspector of 7-th Circuit of the Finnish Senate Railways and Public
Works Expedition. Town Vyborg.
F. 282 Vyborgsky (city) Postal Office of Postal Governance
of Finland Railways and Public Works
Ministry. (Town Vyborg).