- 2017. Explanation of a Zoroastrian Prophecy: Length of the "Bahá'í Cycle". Karl Weaver. — Review of certain concepts in Judaism, Christianity, Islam, ancient astrology, and modern astronomic...
- 2013. Universal Cycles, The. Abdu'l-Bahá, Shoghi Effendi, Universal House of Justice, Iscander Micael Tinto, comp. . — Lengthy compilation on the cycles of time and eras in the world of existence, and stages of Baha'i d...
- 2010. Historical Consciousness and the Divine Plan. Douglas Martin. — A series of eight short talks (total around two hours), in both audio and video formats, on the evol...
- 2002-02-14. Tablet to Hasan-i-Sháhábadí (Lawh-i-Hasan-i-Sháhábadí). Bahá'u'lláh, Khazeh Fananapazir, trans. . — A tablet from the Akka period, addressed to a certain Hasan living in Shahabad of Arak in central Ir...
- 1995. Ages and Cycles. Moojan Momen. — Overview of the ideas of specific cycles and periods of time in Baha'i belief.
- 1964. Ridván 1964: Bahá'í Era 121. Universal House of Justice. — Annual message to the Baha'is of the world.
- 1953-05-04. Vast, Majestic Process, A. Shoghi Effendi. — Passage outlining humanity’s progressive evolution through ten stages.
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