Source Data Reference for:

City = Yekaterinburg
Time = 1900

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Yekaterinburg	1897	55,500			Jan Lahmeyer	http://www.populstat.info/	n/a
Ekaterinenburg	1900	54,000			Tertius Chandler	Four thousand years of urban growth	p497
Yekaterinburg	1917	71,590			n/a	http://www.wikipedia.org/	eng2011