New-York Association of Friends for the Relief of Those Held in Slavery and the Improvement of Free People of Color; Slavery and the church -- Society of Friends; Quaker abolitionists -- New York (State); Antislavery movements -- New York (State)
Lay, Benjamin, 1677-1759; Sandiford, Ralph, 1693-1733; Antislavery movements; Quaker abolitionists; Philadelphia Yearly Meeting of the Religious Society of Friends