In the District of Columbia, the slave trade was legal from its creation until it was outlawed as part of the Compromise of 1850. That restrictions on slavery in the District were probably coming was
The District of Columbia, slave market of America. Includes Alexandria slave dealers. American Anti-Slavery Society, 1836.
Celebration by "the colored people in Washington" of the fourth anniversary of the abolition of slavery in the District of Columbia, April 19, 1866
Main section of Tragic Prelude, a mural by John Steuart Curry in the Kansas State Capitol
Cover of Speech of Hon. Horace Mann, of Massachusetts, on slavery and the slave-trade in the District of Columbia, delivered in the House of Representatives of the United States, February 23, 1849, printed by Pennsylvania Anti-Slavery Society
An Act for the Release of certain Persons held to Service or Labor in the District of Columbia, 37th Cong., Sess. 2, ch. 54, 12 Stat. 376, known colloquially as the District of Columbia Compensated Em
Slavery in the District of Columbia
…people remained legal in the District. It was not until the departure of the legislators from the seceding states that Congress could pass in 1862 the District of Columbia Compensated Emancipation Act. The act provided partial compensation, up to $300 per slave, to slave owners. It was paid from general federal funds. Even though the compensation was…