- n.d.. Timeline of major letters of the Guardian. Author unknown, comp. — Date, location published, summary, and memorable quotations of some significant letters of Shoghi Ef...
- 2020/2023. Letters of Shoghi Effendi, Arranged Chronologically. Shoghi Effendi, Don Calkins, comp. . — Compilation of all the Guardian's messages, arranged in chronological order as individual "rich text...
- 2016. Uncompiled Letters. Shoghi Effendi, Don Calkins, comp. . — 1,500 messages by or on behalf of the Guardian not found in the various national collections such as...
- 2006. Shoghi Effendi: The Range and Power of His Pen. Alí Nakhjavání. — The evolving style of the Guardian's writings; comparison of different periods of his writing; his t...
- 1995. Messages of Shoghi Effendi to the Indian Subcontinent: 1923-1957. Shoghi Effendi, Iran Furutan Muhajir, comp. . — Revised and expanded version of Dawn of a New Day.
- 1992. This Decisive Hour: Messages from Shoghi Effendi to the North American Bahá'ís 1932-1946. Shoghi Effendi. — Expanded version of Messages to America. Includes glossary of Baha'i terms.
- 1981. Unfolding Destiny. Shoghi Effendi. — Letters and telegrams by or on behalf of Shoghi Effendi to British Baha'is from 1922 to 1957. Those ...
- 1980. Citadel of Faith: Messages to America 1947-1957. Shoghi Effendi. — A collection of messages from the Guardian to the Baha’is of the United States, written between 19...
- 1977. Divine Springtime: Louise Caswell Recalls the Early Years of the Bahá'í Faith in Central America and Panama. Daniel Nelson Wegener. — Overview of Baha'i pioneering to and growth in Central America, covering the period from the late 19...
- 1974 [1928]. Bahá'í Administration. Shoghi Effendi. — Excerpts from 'Abdu'l-Baha's Will and Testament, and letters from Shoghi Effendi 1922-1932.
- 1973. Directives from the Guardian. Shoghi Effendi, Gertrude Garrida, comp. . — Compilation of passages from letters of Shoghi Effendi which were published in the Baha'i News of th...
- 1971 [1938]. Advent of Divine Justice. Shoghi Effendi. — A letter from Shoghi Effendi to the Baha’is of North America, dated 25 December 1938; the Baha'is'...
- 1971. Messages to the Bahá'í World: 1950-1957. Shoghi Effendi. — General messages of Shoghi Effendi to the Baha'is, written between 1950 and 1957.
- 1970. Dawn of a New Day. Shoghi Effendi. — Early version of Messages of Shoghi Effendi to India.
- 1953. Guidance for Today and Tomorrow: Excerpts. Shoghi Effendi. — A compilation of letters from Shoghi Effendi, all but one published in other volumes. This version o...
- 1939-40/2003. Study Outlines and Aids for World Order Letters of Shoghi Effendi. Study Outline Committee. — Outline and summary of this series of letters, including a topical index for each, providing the tho...
- 1923-12-19. Extracts from the Guardian's Letter of December 19 1923 Addressed to the Baha'is of the East. Shoghi Effendi. — Words of consolation and uplift to the Baha'i community two years after the passing of Abdu'l-Baha, ...
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