Source Data Reference for:

City = London
Time = 1400

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
London	1400	45,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
London	1400	50,000			Tertius Chandler	Four thousand years of urban growth	p539
London	1400	50,000			Tertius Chandler	Four thousand years of urban growth	p513
London	1400	50,000			Tertius Chandler	Four thousand years of urban growth	p476
London	1400	50,000			Tertius Chandler	Four thousand years of urban growth	p18