|description=was an American Theosophist, editor and writer; a relative of H. P. Blavatsky, his mother was Lydia Dmitriyevna von Hahn, who was a second cousin to Helena Petrovna Blavatsky. He was and the editor of her written works, published in [[H. P. Blavatsky Collected Writings]] and other books. | |description=was an American Theosophist, editor and writer; a relative of H. P. Blavatsky, his mother was Lydia Dmitriyevna von Hahn, who was a second cousin to Helena Petrovna Blavatsky. He was and the editor of her written works, published in [[H. P. Blavatsky Collected Writings]] and other books. |