Martha Root: Lioness at the Threshold
The definitive biography of Pittsburgh journalist Martha Root, who became the most widely traveled and influential teacher of the Bahá'í Faith, and was designated by the great-grandson of Bahá'u'lláh, Shoghi Effendi, as the "foremost" Hand of the Cause of God.
Author: Mabel Garis.
Format: softcover book, 578 pages.
Publisher: Bahá'í Publishing Trust USA, 1983.