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 Shakespeare 1/3d - First commoner on a stamp (1964)
1900s The Postcode Song by Kerry (1986)
1900s Herbert Samuel, Postmaster General encourages employees to join the Army and serve in the First World War (25 October 1915)
1900s Machin Definitives
1800s Love letters (1845-1847)
1900s Edmund Dulac (1882-1953)