- 2024. Covenant Library: Bahá'í Dates Calendar. Bahá'í World Centre, comp, Covenant Library, comp. Tables and charts of: Bahá'í Holy Days 2025-2064; Bahá'í months and years with their Gregorian conversion; and various references and quotations about the Bahá'í calendar.
- 2021. Half Million Years, A. Dana Paxson. Exploring the 500,000-year Bahá’í cycle asserted by Shoghi Effendi, in two versions: academic-style essay form, and story-narrative form.
- 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 astronomical findings to shed light on Abdu'l-Bahá's interpretation of a prophecy by Zoroaster about the sun being brought to a standstill.
- 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 Bahá'í development.
- 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 evolution of religion and humanity. Includes compilation materials for further study.
- 2001/2025. Ages and Epochs of Bahá'í History. Ernie Jones. Detailed 16-page graphical timeline of the eras, ages, and epochs of Bahá'í history, 1844-2000.
- 1995. Ages and Cycles. Moojan Momen. Overview of the ideas of specific cycles and periods of time in Bahá'í belief.
- 1954/1966. Progressive Revelation. John Ferraby. Short pamphlet on the oneness of religion, Messengers of God, and the religious cycle.
- 1953-05-04. Vast, Majestic Process, A. Shoghi Effendi. Passage outlining humanity’s progressive evolution through ten stages.
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