- Infallibility and Knowledge of Abdu'l-Baha, by Universal House of Justice (1982-04-28). Abdu'l-Bahá's infallibility, authority, and the extent to which his knowledge was historically contextualized.
- Kitáb-i-Íqán, The Book of Certitude: Wilmette Institute faculty notes, by Michael W. Sours, Brent Poirier, Ismael Velasco, Iraj Ayman (1999). Notes on various topics related to Bahá'u'lláh's Book of Certitude.
- Letters Written on Behalf of the Guardian, by Universal House of Justice (2007). Three questions: Letters Written on Behalf of Shoghi Effendi; Status of Research Department Memoranda; Bahá'í Writings Based in Fact? Includes clarification on the authenticity of 'Abdu'l-Bahá's published talks.
- Presentations on Various Topics of Bahá'í Teachings, by Mohammad Norozi (2024). Eight presentations: references to the next Manifestation; equality in the writings of the Bab; listing Letters of the Living in order of conversion; Abdu'l-Bahá's love for Iran; Tablet of Unity; removal of the Sword with the Word; Ocean of Tenderness.
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