Source Data Reference for:

City = Rome
Time = 1300

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Rome	1300	33,000	"1/3 of Florence at 100,000"	Dante's life	Aldo Cazzullo	A riveder le stelle	p51
Rome	1300	30,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Rome	1300	30,000			Tertius Chandler	Four thousand years of urban growth	p17
Rome	1346	18,500	"btw 15,000 & 22,000"		Colin McEvedy	The New Penguin Atlas of Medieval History ISBN 0-14-051249-7	p89