Source Data Reference for:

City = Cempoala
Time = 1500

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Zempoala	1500	30,000			Tertius Chandler	Four thousand years of urban growth	p41
Zempoala	1500	30,000			Tertius Chandler	Four thousand years of urban growth	p514
Zempoala	1500	30,000			Tertius Chandler	Four thousand years of urban growth	p539
Cempoala	1519	30,000			n/a	Mexico City National Museum of Anthropology	panel
Cempoala	1519	27,500	"btw 25,000 & 30,000"	Spanish conquest	Rough Guide	Mexico	p586
Cempoala	1519	30,000		Spanish conquest	Victor Von Hagen	Gli Aztechi: civilta' e splendore	p153