Source Data Reference for:

City = Thessaloniki
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Thessaloniki	1850	70,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Thessaloniki	1850	75,000			Tertius Chandler	Four thousand years of urban growth	p24