- Armstrong, Counsellor Leonora: A Loving Portrait, by Kristine Leonard Asuncion (1982-08). Brief biographical sketch of Counsellor Armstrong, the "Spiritual Mother of South America" (1895-1980).
- Chronicles of a Birth: Early References to the Bábí and Bahá'í Religions in Spain, part 3 (1873-1895), by Amin E. Egea (2010). Found sources for Bábí and Bahá'í history available in Span covering the years 1844 to 1947 (when the Bahá'í faith was established in Spain), pt. 3.
- Ella del Valiente Corazón: La Vida de Miss Eve Blanche Nicklin (1895-1985), "Madre Spiritual del Perú", by Boris Handal (2002/2024). The life of Eve Nicklin, "Spiritual Mother of Peru."
- Eve Nicklin: She of the Brave Heart, by Boris Handal (2011). The life of the "Spiritual Mother of Peru."
- Provincial Politics of Heresy and Reform in Qajar Iran, The: Shaykh al-Rais in Shiraz, 1895-1902, by Juan Cole (2002). Biography and political/historical context of "the poet laureate of the Iranian Constitutional Revolution," who was secretly a second-generation Bahá'í.
- "Wonderful True Visions": Magic, Mysticism, and Millennialism in the Making of the American Bahá'í Community, 1892-1895, by Richard Hollinger (2004). The early growth of the American, and especially the Chicago, communities was more gradual and eclectic than previously thought, and Kheiralla's influence was less crucial.
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