Quotes:Gestefeld, Ursula Newell
Zirkoff, Boris
Gestefeld, Ursula Newell (1845-1921). *Mrs. N. G.’s Statement of Christian Science. 3rd ed., Chicago, 1889; 4th ed., New York, 1889.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 10, p. 417