The District of Columbia Emancipation Act

"On April 16, 1862, President Abraham Lincoln signed a bill ending slavery in the District of Columbia. Passage of this act came 9 months before President Lincoln issued his Emancipation Proclamation. The act brought to conclusion decades of agitation aimed at ending what antislavery advocates called "the national shame" of slavery in the nation's capital...":
District of Columbia 

13th Amendment to the U.S. Constitution: Abolition of Slavery

"The House Joint Resolution proposing the 13th amendment to the Constitution, January 31, 1865; Enrolled Acts and Resolutions of Congress, 1789-1999; General Records of the United States Government; Record Group 11; National Archive.

Passed by Congress on January 31, 1865, and ratified on December 6, 1865, the 13th amendment abolished slavery in the United States and provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction."
13th Amendment

Compromise of 1850

"The Compromise was actually a series of bills passed mainly to address issues related to slavery. The bills provided for slavery to be decided by popular sovereignty in the admission of new states, prohibited the slave trade in the District of Columbia, settled a Texas boundary dispute, and established a stricter fugitive slave act. This featured document is Henry Clay's handwritten draft.
Read more at Our Documents......"
Compromise 1850

Proclamation of the Secretary of State announcing the ratification of the Thirteenth Amendment to the Constitution, December 18, 1865

"Proclamation of the Secretary of State announcing the ratification of the Thirteenth Amendment to the Constitution, December 18, 1865; General Records of the United States Government; Record Group 11; National Archives.

Passed by Congress on January 31, 1865, and ratified on December 6, 1865, the 13th amendment abolished slavery in the United States and provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction." Secretary of State William H. Seward issued this Proclamation announcing the ratification on December 18, 1865..."
13th Amendment to the Constitution

13th Amendment to the U.S. Constitution: Abolition of Slavery

"Passed by Congress on January 31, 1865, and ratified on December 6, 1865, the 13th amendment abolished slavery in the United States and provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction."..."
13th Amendment

Inside America’s Auschwitz

"At first glance, the “Wall of Honor” at Louisiana’s Whitney Plantation slavery museum — a series of granite stones engraved with the names of hundreds of slaves who lived, worked and died there — evokes any number of Holocaust memorials. But as the future mayor of New Orleans noted at the museum’s 2008 opening, this site is different; this is America’s Auschwitz.  

“Go on in,” Mitch Landrieu told the crowd, according to the New York Times. “You have to go inside. When you walk in that space, you can’t deny what happened to these people. You can feel it, touch it, smell it.”

The former indigo, sugar and cotton operation, which finally opened to the public after years of careful restoration in December 2014 as the country’s first slave museum, is a modern avatar of injustice. Nestled off the historic River Road that runs alongside the slow, lazy crook of the Mississippi, the estate was built in the late 1700s by entrepreneur Jean Jacques Haydel upon land purchased by his German-immigrant father, Ambroise. It was the younger Haydel who expanded the estate and established the plantation as a key player in Louisiana’s sugar trade, transitioning the main crop away from the less-profitable indigo markets. A couple of years after the Civil War, a Northerner by the name of Bradish Johnson bought the property and named it after his grandson Harry Whitney..."
Whitney Plantation

The Slaves of the White House Finally Get to Have Their Stories Told

"President Barack Obama might be the first black president to serve in the White House, but he certainly was not the first black person to live there. Yet the history of the original black residents of 1600 Pennsylvania Avenue has been sparsely reported on, as Associated Pressreporter Jesse J. Holland discovered when he began researching his latest book, The Invisibles: The Untold Story of African American Slaves in the White House. The Invisibles—a smart sketch on the lives of these men and women in bondage—is intended to serve as a historical first take. Holland’s goal writing about the slaves who resided alongside 10 of the first 12 presidents who lived in the White House is to start a conversation on who these enslaved people were, what they were like, and what happened to them if they were able to escape from bondage..."
Slaves and the White House

Trafficking in Persons: International Dimensions and Foreign Policy Issues for Congress

"Trafficking in persons, or human trafficking, refers to the involuntary subjection of men, women,
and children to exploitative conditions that can be tantamount to slavery. Reports suggest that
human trafficking is a global phenomenon, victimizing millions of people each year and
contributing to a multi-billion dollar criminal industry. It is a centuries-old problem that, despite
international and U.S. efforts to eliminate it, continues to occur in virtually every country in the
world. Human trafficking is also an international and cross-cutting policy problem that bears on a
range of major national security, human rights, criminal justice, social, economic, migration,
gender, public health, and labor issues..."

Human Trafficking Awareness Day: 20 Ways You Can Help Fight Modern Slavery

"After first learning about human trafficking, many people want to help in some way but do not know how. Here are just a few ideas for your consideration.

1. Learn human trafficking red flags and ask follow up questions so that you can detect a potential trafficking situation.

2. In the United States, report your suspicions to law enforcement at 911, Department of Justice at 1-888-428-7581, and the National Human Trafficking Resource Center at 1-888-3737-888. Victims, including undocumented individuals, are eligible for services and immigration assistance.

3. Be a conscientious consumer. Make socially responsible investments. Let your favorite retailers know that you support their efforts to maintain a slavery free supply chain. Encourage your company or your employer to take steps to investigate and eliminate human trafficking throughout its supply chain and to publish the information for consumer awareness. Refer to the Department of Labor’s List of Goods Produced by Child Labor or Forced Labor.

4.Hire trafficking survivors..."

Slavery Resource Guide
"The digital collections of the Library of Congress contain a wide variety of material related to slavery, including photographs, documents, and sound recordings. This guide compiles links to slavery resources throughout the Library of Congress Web site. In addition, it provides links to external Web sites focusing on slavery and a bibliography containing selections for both general and younger readers."