My name: X. Tao.
Description of myself: Xin Tao is currently a lecturer at Department of Geographical Sciences, University of Maryland, USA. He received a master's degree from Peking University and a PhD degree from University of Maryland. He received a bachelor's degree from Peking University. He was born in Lichuan county, Jiangxi Province, China. He has taught at University of Maryland, University at Buffalo, and Singapore Institute of Management.
A collection of maps available online.
School district boundaries
Baltimore redlining: