Source Data Reference for:

City = The Hague
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
The Hague	1840	63,600			Jan Lahmeyer	http://www.populstat.info/	n/a
The Hague	1850	65,000			Tertius Chandler	Four thousand years of urban growth	p24
The Hague	1850	72,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
The Hague	1874	100,000	passed for the 1st time		Tertius Chandler	Four thousand years of urban growth	p542