Quotes:Shcherbatov, Prince Mihail Mihaylovich
Zirkoff, Boris
Shcherbatov, Prince Mihail Mihaylovich (1733-90). *Russian History from the Earliest Times [Russian Text], St. Petersburg, 1774-1805, 7 vols.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 2, p. 544