Quotes:Simpson, William
Zirkoff, Boris
Simpson, William. *Buddhist Architecture in the Jellalabad Valley. London, 1880, 27 pp., with sketches and plans. From the Transactions of the Royal Institute of British Architects, Session 1879-80.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 2, p. 544