Source Data Reference for:

City = Oyo
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Oyo	1825	60,000		1820s	Tertius Chandler	Four thousand years of urban growth	p297
Oyo	1827	60,000			Tertius Chandler	Four thousand years of urban growth	p297
Oyo	1830	50,000			Tertius Chandler	Four thousand years of urban growth	p297
Oyo	1839	0	abandoned		Tertius Chandler	Four thousand years of urban growth	p297
Oyo	1850	25,000			Tertius Chandler	Four thousand years of urban growth	p297
Oyo	1856	25,000			Tertius Chandler	Four thousand years of urban growth	p297