Source Data Reference for:

City = Turin
Time = 1800

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Turin	1800	57,000			Tertius Chandler	Four thousand years of urban growth	p23
Turin	1800	57,000			Tertius Chandler	Four thousand years of urban growth	p486
Turin	1800	82,000			Jan De Vries	European urbanization 1500-1800	p276
Turin	1800	82,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Turin	1820	90,000			Valentin Parisot	Dictionnaire geographique universelle