Source Data Reference for:

City = Leiden
Time = 1700

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Leiden	1650	67,000			Jan De Vries	European urbanization 1500-1800	p271
Leiden	1650	60,000			Jan Lahmeyer	http://www.populstat.info/	n/a
Leiden	1650	63,000			Tertius Chandler	Four thousand years of urban growth	p482
Leiden	1700	63,000			Tertius Chandler	Four thousand years of urban growth	p539
Leiden	1700	56,000			Tertius Chandler	Four thousand years of urban growth	p21
Leiden	1700	56,000			Tertius Chandler	Four thousand years of urban growth	p516
Leiden	1700	55,000			Jan De Vries	European urbanization 1500-1800	p271
Leiden	1700	63,000			Jan Lahmeyer	http://www.populstat.info/	n/a
Leiden	1700	65,000			Paul Bairoch	La population des villes europeennes de 800 a 1850