Valentine's Cards

The first Valentin's cards were sent in the 18th century, lovers would decorate paper with romantic symbols including flowers and love knats, often including puzzles and lines of poetry, these cards were then slipped secretly under a door, or tied to a door-knocker.
Not all Valentine's cards were so romantic, however these cards typically lampooned a man's profession or a woman's apparence.
The industrialisation of Britain in the early 19th-century brought with it rapid advances in printing and manufacturing technologies, it became easier than ever to mass-produce Valentine's cards.