Henry Steel Olcott [aryasangha.org] - Introduction to the book by Stephen Prothero and a long article looking at Olcott's interpretation of Buddhism. - http://aryasangha.org/olcott-prothero.htm
Henry Steel Olcott: founder of the Theosophical Society - Articles by Olcott on Buddhism, Blavatsky and the mysteries. Two biographical articles and reproductions of rules of the Theosophical Society he helped write. - http://www.katinkahesselink.net/other/c/c-olcott.html
Ascetism - A word of friendly advice, by H.S.Olcott. On the difference between external and internal purity. - http://www.theosophical.ca/Ascetism.htm
The Vampire, by H.S.Olcott - Adyar Pamphlet No. 112. "it is most evident that too much care cannot be taken to ascertain beyond doubt the actual and complete death of a person before committing the body to the grave." - http://www.theosophical.ca/Vampire.htm
Spiritualism and Theosophy by H.S.Olcott - Lecture delivered at the rooms of the United Service Institution of India, Simla. - http://www.theosophical.ca/Spiritualism%20.htm
"On Theosophy" by H. S. Olcott - Compiled by S. B. Dougherty, from speeches collected in Theosophy, Religion and Occult Science (1885), and from Theosophical Siftings, vol. 4, no. 10 (1891). - http://www.theosophy-nw.org/theosnw/theos/th-hso.htm
On Madame Blavatsky and the Mahatmas - An extract from Olcott's lecture titled "Theosophy, the Scientific Basis of Religion,". - http://www.blavatskyarchives.com/olcotttraos85.htm
Olcott, Henry Steele - Description of his life. - http://www.themystica.com/mystica/articles/o/olcott_henry_steele.html