Source Data Reference for:

City = Lviv
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Lemberg	1850	71,000			Tertius Chandler	Four thousand years of urban growth	p24
Lvov	1850	68,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Lviv	1858	70,400			n/a	Gothaischer Hofkalender