From the History Notes range by Cath Tate, these cards are both educational and witty, making them ideal to send to wish a friend happy birthday or just to say hello.
Depicting a historical figure on the front, the back cover of the card features a brief biography of the notable person. Here's big Charles Darwin letting the birthday boy or girl know that they haven't aged - they've evolved.
Blank inside for your own message, each card measures 12cm x 17cm and comes with a white envelope.