Callie House (1861–1928) was a leader of the National Ex-Slave Mutual Relief, Bounty and Pension Association, one of the first organizations to campaign for reparations for slavery in the United States.

While slavery was officially abolished following the 13th Amendment, many former enslaved persons were forced into sharecropping and doing menial labor as they had no financial freedom or resources.

[3] It had two main goals: to petition Congress for a bill that would grant compensation (reparations) to former enslaved persons, and to provide mutual aid and burial expenses.

[3] Without evidence, only the Post Office Department could accuse organizations such as MRB&PA by citing fraud and arguing that US mail was being used to defraud slaves.

Upon hearing this, House reminded the commissioner that the Constitution of the United States grants its citizens the right to petition Congress for a redress of grievances.

In 1915, under House's leadership, the association filed a class-action lawsuit, Johnson v. McAdoo, in federal court against the U.S. Treasury Department for 68 million dollars.