found: His Lahemaa ajalugu, 1983:t.p. (Enn Tarvel)
found: Pullat, R. Istorii︠a︡ goroda Tartu, 1980:t.p. (Ė. Tarvel) colophon (Ėnn Tarvel)
found: Gorod, derevni︠a︡ i determinat︠s︡ii︠a︡ kulʹtury v severo-vostochnoĭ Evrope, 1989:t.p. verso (Ė.V. Tarvel)
found: National Library of Latvia in VIAF, Jan. 5, 2016(hdg.: Tarvel, Enn, 1932- )
found: National Library of Netherlands in VIAF, Jan. 5, 2016(hdg.: Tarvel, Ėnn Valdekovič)
found: Vikipeedia (Estonian), March 2, 2021(Enn Tarvel (surname until 1939: Treiberg); b. July 31, 1932, in village Metsiku; historian)