The Universal House of Justice published a compilation of Bahá'u'lláh's messages titled The Proclamation of Bahá'u'lláh to the Kings and Leaders of the World to mark the 100th anniversary of the inception of that proclamation. Bahá'í institutions worldwide were asked to present the book to the leaders of government in their respective countries. Some 140 Heads of State received a copy. [MUHJ63-86p113]
The Universal House of Justice called upon the Bahá’ís to launch a global campaign proclaiming the message of Bahá’u’lláh to every stratum of society. A special edition of The Proclamation of Bahá'u'lláh was to be presented to Heads of State. [BW14:211, Ridván 1967]
A special edition of The Proclamation of Bahá’u’lláh was published by the Universal House of Justice for presentation to 140 heads of state. [BW14:204–6; CB406]
For a picture of the book see BW14:194.
For pictures and descriptions of some of the rulers addressed by Bahá’u’lláh see BW14:196–203.
For responses from present-day leaders to the book, and pictures, see BW14:207–10.
Proclamation of Baha'u'llah sources (2000). Cross-reference chart of passages published in Proclamation of Bahá'u'lláh with Summons of the Lord of Hosts and other published sources. [about]
Three Momentous Years of the Heroic Age, by Adib Taherzadeh, in Bahá'í World, Volume 15 (1968-1973) (1973). A look at the extraordinary period of Revelation immediately after Bahá’u’lláh’s imprisonment in Akká. [about]