- Czar Alexandre II: Breve apontamento biográfico e a sua relação com a religião Bahá'í, by Marco Oliveira (2007). Breve resumo histórico da vida do Czar Alexandre II; a relação da Russia com os Bahá'ís e a Epistola de Bahá'u'lláh a Czar. Short description of the life of Tzar Alexander II, Russia, and the Tablet of Bahá'u'lláh to the Tzar.
- Summons of the Lord of Hosts, by Bahá'u'lláh (2002). A collection of the tablets of Baháʼu'lláh, written to the kings and rulers of the world during his exile in Adrianople and in the early years of his exile to the fortress town of Acre.
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