Royal Mail had a special section called ‘Dead Letter Office’ where it dealt with post that could not be delivered. Postal workers had to be very resourceful at times which caused the Post Office to produce a poster campaign advertising clear and correct addressing. ‘Five million wrong 'uns every day. Clear, correct addressing speeds your mail’ stated a 1959 poster.
1900s Letter drafted by Leo Szilard and signed by Albert Einstein to Franklin D Roosevelt (August 1939)
1700s Mail Coach (18th century)
1800s Mail deliveries in all weather – Samuel Henry Alken oil painting
1800s Letters re. John Tilley’s knighthood – Disraeli (1880)
1900s Queen Elizabeth’s Letter to President Dwight D. Eisenhower (24 January 1960) Held in the National Archives
1900s Suffragettes being sent by express delivery (23 February 1909)