The book entitled ”The Proclamation of Bahá'u'lláh” was presented to Heads of State during the centenary of Baha’u’llah’s Own Proclamation in Adrianople

A hundred years ago Bahá'u'lláh Himself addressed the kings, rulers, religious leaders and peoples of the world. The Universal House of Justice feels it its bounden duty to bring that Message to the attention of the world's leaders today. It is therefore presenting to them, in the form of a book, the essence of Bahá'u'lláh's announcement. Entitled The Proclamation of Bahá'u'lláh, a special edition will be presented to Heads of State during the opening of the proclamation period and a general edition will be available to the friends in English, French, German, Italian and Spanish. 
(The Universal House of Justice, excerpt from a message dated Ridvan 1967, ‘Messages from the Universal House of Justice, 1963 to 1986’) 
(To read the entire letter please visit Messages to the Baha’i World Community—by the Universal House of Justice)

April 1962: First National Convention of the Baha'is of Sweden

First National Convention of the Baha'is of Sweden, April 1962 (Baha'i News, August 1962)

1929: Certificate of the United States Federal Government to the Declaration of Trust entered by the National Spiritual Assembly of the Baha'is of the United States and Canada

Certificate of the United States Federal Government to the Declaration of Trust entered by the National Spiritual Assembly of the Baha'is of the United States and Canada. (The Baha'i World 1932-1934)

1993: Baha'i stamp issued in Holy Land

Baha'i stamp issued in Israel, 1993