- Duane Troxel. 15 Bahá'í Word Search Puzzles (2022). Word-search puzzles with Bahá'í themes. Solutions provided at end.
- Duane Troxel. 25 Bahá'í Crossword Puzzles (2021). Crossword puzzles with Bahá'í themes. Solutions provided after each puzzle.
- Mona G. Seow, Jimmy Seow. Covenant Deepening: Workshop Materials (2002). A nine-part set of deepening materials on the Covenant, including study guides, a book-length compilation on the covenant, a crossword puzzle, and group discussion topics and activities.
- Encyclopaedia Iranica. Arjen Bolhuis, comp. Encyclopaedia Iranica: Selected articles related to Persian culture, religion, philosophy and history (1982-2023). Sorted, categorized collection of links to over 170 articles.
- Tom Price. Spirituality of Games (2012). Talk on the science of spirituality as it relates to a quotation of Abdu'l-Bahá comparing life to a game: what are the rules of life, and how does one win the "game" of life?
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