The Society of Antiquaries of London (SAL) is a learned society of historians and archaeologists in the United Kingdom. It was founded in 1701, received its royal charter in 1751 and is a registered charity. It is based at Burlington House in Piccadilly, a building owned by the UK government. The modern membership of around 3,300 fellows mostly consists of archaeologists and historians, who can use the post-nominal letters FSA after their names. Source: Wikipedia (en)