Source Data Reference for:

City = Hertogenbosch
Time = 1900

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Hertogenbosch	1899	31,300			Carl Ritter	Ritter's geographisch-statistisches Lexikon
Hertogenbosch	1900	32,000			Tertius Chandler	Four thousand years of urban growth	p502