@article{oai:hokusei.repo.nii.ac.jp:00000370,
 author = {Gettings, Robert E. and Gettings, Robert E.},
 month = {2014-02-03},
 title = {Lewis Hayden's 1847-1848 Anti-Slavery Tour and the American Anti-Slavery Society as an Employer},
 year = {}
}