Source Data Reference for:

City = Caen
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Caen	1850	43,000			Tertius Chandler	Four thousand years of urban growth	p26
Caen	1850	45,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Caen	1866	41,600			n/a	Gothaischer Hofkalender