@article{Hall2004,
author = {Hall, P.K. and Ruggles, S.},
title= {‘Restless in the midst of their prosperity’: New evidence on the internal migration of Americans, 1850‒2000},
year = {2004},
doi = {10.2307/3662857},
volume = {91},
number = {3},
pages = {829‒846},
}