A memorial sign at Graball Landing, the spot where Emmett Till's body was pulled from the Tallahatchie River just outside of Glendora, Miss., is photographed Monday, July 24, 2023. (AP Photo/Rogelio V. Solis)

When President Joe Biden signs a proclamation on Tuesday establishing a national monument honoring Emmett Till and his mother, Mamie Till-Mobley, it will mark the fulfillment of a promise Till’s relatives made after his death 68 years ago.

 An undated portrait of Emmett Louis Till, a Black 14-year-old Chicago boy, whose weighted down body was found in the Tallahatchie River near the Delta community of Money, Mississippi, August 31, 1955. (AP Photo, File)

Biden will sign a proclamation on Tuesday to create the Emmett Till and Mamie Till-Mobley National Monument across three sites in Illinois and Mississippi, according to the official. 

 An undated portrait of Emmett Louis Till, a Black 14-year-old Chicago boy, whose weighted down body was found in the Tallahatchie River near the Delta community of Money, Mississippi, August 31, 1955. (AP Photo, File)

Till’s kidnapping and killing became a catalyst for the civil rights movement when his mother insisted on an open-casket funeral in their hometown of Chicago after his brutalized body was pulled from a river in Mississippi. Jet magazine published photos.

In this undated photo 14-year-old Emmett L.Till from Chicago is shown. Till, whose battered body, a bullet in his head, and a weight around his neck was pulled from the Tallahatchie River in 1955. (AP Photo, File)

The bill, which passed the Senate in January, is meant to honor Till and his mother — who had insisted on an open casket funeral to demonstrate the brutality of his killing — with the highest civilian honor that Congress awards. 

Naomi Davis, founder and CEO of Blacks in Green, at the Mamie Till-Mobley Forgiveness Garden in West Woodlawn. (Patty Wetli / WTTW News)

Davis, founder of Blacks in Green, envisions Woodlawn teeming with biodiversity, resilient in the face of climate change and capable of supporting a local workforce employed in green business such as horticulture or composting. 

In this undated photo 14-year-old Emmett L.Till from Chicago is shown. Till, whose battered body, a bullet in his head, and a weight around his neck was pulled from the Tallahatchie River in 1955. (AP Photo, File)

A Mississippi community with an elaborate Confederate monument plans to unveil a larger-than-life statue of Emmett Till on Friday, not far from where white men kidnapped and killed the Black teenager.

This image released by Orion Pictures shows Jalyn Hall as Emmett Till, left, and Danielle Deadwyler as Mamie Till-Mobley in "Till." (Lynsey Weatherspoon/Orion Pictures via AP)

As “Till” debuts, the studio and production companies behind the film have partnered in a campaign to recognize Black women and Black mothers who are continuing Till-Mobley’s legacy and fight for justice, equality and equity. 

In this undated photo 14-year-old Emmett L.Till from Chicago is shown. Till, whose battered body, a bullet in his head, and a weight around his neck was pulled from the Tallahatchie River in 1955. (AP Photo, File)

After hearing more than seven hours of testimony from investigators and witnesses, a Leflore County grand jury last week determined there was insufficient evidence to indict Carolyn Bryant Donham on charges of kidnapping and manslaughter.

In this Aug. 26, 2020 file photo, the former home of Emmett and Mamie Till at 6427 S St. Lawrence Avenue is pictured in the West Woodlawn neighborhood of Chicago. (Anthony Vazquez / Chicago Sun-Times via AP, File)
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A cultural preservation organization announced Tuesday that the house will receive a share of $3 million in grants being distributed to 33 sites and organizations nationwide that are important pieces of African American history.

Rep. Bobby Rush, D-Ill., speaks during a news conference about the Emmett Till Anti-Lynching Act on Capitol Hill in Washington, on Feb. 26, 2020. (AP Photo / J. Scott Applewhite, File)

Years in the making, the Emmett Till Anti-Lynching Act is among some 200 bills that have been introduced over the past century that have tried to ban lynching in America. It is named for the Black teenager from Chicago whose brutal killing in Mississippi in 1955 became a pivotal moment in the Civil Rights era.

(WTTW News Graphic)

On Monday, “Chicago Tonight” co-host and “Chicago Tonight: Black Voices” host Brandis Friedman moderated the latest edition of our “Chicago Tonight: Black Voices” community conversation series in a discussion focused on the legacy of Emmett Till and Mamie Till-Mobley.

After the abduction and lynching of her son in 1955, Till-Mobley became a teacher and civil rights activist. Now her life and influence are the focus of a new limited series. (Courtesy  Chicago Sun-Times Collection, Chicago History Museum)
After the abduction and lynching of her son in 1955, Mamie Till-Mobley became a teacher and civil rights activist. Now her life and influence are the focus of a new limited series.
This image released by ABC shows Cedric Joe as Emmett Till, left, and Adrienne Warren as Mamie Till-Mobley in “Women of the Movement.” (Matt Sayles. ABC via AP)

ABC will air a short-run series “Women of the Movement” next season about Mamie Till-Mobley, whose son Emmett Till became a symbol of the civil rights movement after he was lynched in Mississippi in 1955.