@article{oai:hokusei.repo.nii.ac.jp:00000361,
 author = {Gettings, Robert E. and Gettings, Robert E.},
 month = {2014-02-03},
 title = {An African American Anti-Slavery Activist Becomes a Legislator : Lewis Hayden's One Year (1873) in the Massachusetts House of Representatives},
 year = {}
}