Whiteboard
Whiteboards became commercially available in the early 1960s, but did not become widely used until 30 years later. Early whiteboards needed to be wiped with a damp cloth and markers had a tendency to leave marks behind, even after erasing the board. Dry-erase markers for whiteboards were invented in 1975.
White boar
The White Boar was the personal device or badge of the English King Richard III of England (1452—1485, reigned from 1483), and is an early instance of the use of boars in heraldry.