SOS message from Titanic
A wireless message received by the Russian steamer Birma from the Titanic about five minutes after Titanic struck the iceberg that sank her. The Titanic is identified by her code letters MGY and the message uses both old distress call letters CQD (Come Quickly Danger) and new, SOS. It reads, "CQD - SOS from M.G.Y. We have struck iceberg sinking fast come to our assistance. Position Lat 41, 46 N., Long 50, 14 W. - MGY." Date: 14th April 1912
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10513078
Girl Guides: Princesses Elizabeth and Margaret send courier
Princess Elizabeth, patrol leader in the Buckingham Palace Company, sends a message by courier pigeon to Lady Baden Powell at Guide Headquarters. It was one of the many messages sent by girl guides all over the country on the occasion of "thinking day", which marks the birthday of the late Lord Baden Powell. Founder of the Boy Scouts, and his wife.Princess Margaret holds the pigeon container, while Princess Elizabeth writes the message, at Windsor. Date: 20th February 1943
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10510762
Telegraph receiver. Historical artwork of a Breguet telegraph receiver. Messages arrived at the receiver in wires as a series of long and short electric pulses. Electromagnets converted the pulses into dashes and dots printed on ticker tape (running from the spool at top through the mechanism at centre). In Morse code, each letter and number is represented by a combination of dots and dashes. Electrical telegraphs were an important application of the newly-discovered electromagnetic force. The first practical telegraph was invented by Samuel Morse in 1837. Published in La Telegraphie Historique (History of Telegraphy) by Alexis Belloc in 1888.
© SHEILA TERRY/SCIENCE PHOTO LIBRARY