- 2019. Louis Gregory (1874-1951). John S. Hatcher. Overview of the life of a famous Bahá'í lawyer, anti-racism educator and travel-teacher, and Hand of the Cause. Essays.
- 2009. Gregory, Louis George. Gayle Morrison. On the African American lawyer who became a leading Bahá’í speaker, writer, administrator, and proponent of race unity and equality, member of the national governing body of the Bahá’ís of the United States and Canada, and Hand of the Cause. Encyclopedia.
- 1993/1998. Gregory, Louis G.: The Advancement of Racial Unity in America. Harlan F. Ober, Richard Francis, ed. . Short biography of an early African-American Bahá'í. Biographies.
- 1972 March-April. Historical Background of the Panama Temple. Ruth Pringle. A history of the Bahá’í Faith in Panama during the first and second U.S. Seven Year Plans, from the arrival of the first pioneers in 1939 to the formation of the first Regional Assembly in 1951. Articles.
- 1955/1976. Above All Barriers: The Story of Louis G. Gregory. H. Elsie Austin. Article, published as a pamphlet, summarizing the life of this famous lawyer and social activist. Articles.
- 1951/1972. Questions and Answers 1950-51. Mirra Alfassa (published as The Mother). Recollections of Abdu'l-Bahá speaking about sacrifice and suffering by a leading spiritual collaborator of Sri Aurobindo. Excerpts.
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