@article{Logan2011,
author = {Logan, J.R. and Jindrich, J. and Shin, H. and Zhang, W.},
title= {Mapping America in 1880: The urban transition historical GIS project},
year = {2011},
doi = {10.1080/01615440.2010.517509},
journal = {Historical Methods: A Journal of Quantitative and Interdisciplinary History},
volume = {44},
number = {1},
pages = {49--60},
}