Black Freedom Struggle in the United States:

Resolutions of the Legislature of New York, for the abolition of the slave trade in the District of Columbia; against an extension of slavery into the territory acquired from Mexico; against the extension of slavery or the jurisdiction of Texas over any part of New Mexico; for the admission of California, and in favor of the preservation of the Union.

Legislature of New York, for abolition of slave trade in District of Columbia; against extension of slavery in territory acquired from Mexico; against extension of slavery, or jurisdiction of Texas over any part of New Mexico; for admission of California, and for preservation of Union, 1850

Slave trade.

Slave trade, resolution of legislature of Pennsylvania against importation of slaves into territories, 1808