1982
In the slide program Mr. Caswell begins with the Declaration of the Bab in May of 1844 and it's correlation to the first telegraphic message sent a day later: "What hath God wrought" In 1936 Shoghi Effendi answered the message of 1844: "A mechanism of world inter-communication will be devised, embracing the whole planet, freed from national hindrances and restrictions, and functioning with marvellous swiftness and perfect regularity". He then reviews the development of various technologies leading to telecommunications, all of which are avenues to teaching the Faith.