Source Data Reference for:

City = Rome
Time = 1800

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Rome	1775	148,000			Tertius Chandler	Four thousand years of urban growth	p535
Rome	1800	153,000			Tertius Chandler	Four thousand years of urban growth	p540
Rome	1800	163,000			Jan De Vries	European urbanization 1500-1800	p276
Rome	1800	153,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Rome	1800	142,000			Tertius Chandler	Four thousand years of urban growth	p23
Rome	1800	142,000			Tertius Chandler	Four thousand years of urban growth	p485
Rome	1820	139,900			Valentin Parisot	Dictionnaire geographique universelle