This undated file combination photo made from photos provided by the FBI on June 29, 1964, shows civil rights workers, from left, Andrew Goodman, James Chaney and Michael Schwerner. The three, who disappeared near Philadelphia, Miss., on June 21, 1964, were later found buried in an earthen dam in rural Neshoba County.
Andrew Goodman in a 1963 family photo.
The FBI on June 29, 1964, began distributing this picture of civil rights worker Andrew Goodman, of New York City, who disappeared near Philadelphia, Miss., June 21, 1964. Goodman and two other workers were later found buried in an earthen dam in rural Neshoba County.
The FBI on June 29, 1964, began distributing this picture of civil rights worker James E. Chaney, who disappeared near Philadelphia, Miss., June 21, 1964. Chaney and two other civil rights workers were abducted and killed June 21 and buried in an earthen dam in rural Neshoba County.
The FBI on June 29, 1964, began distributing this picture of civil rights worker Michael H. Schwerner, who disappeared near Philadelphia, Miss., June 21, 1964.
Postcard written by Andrew Goodman
A postcard written by Andrew Goodman in Mississippi to his parents in New York. It is postmarked June 21, 1964 - the last day of Goodman's life.
Goodman's summer application
An excerpt of Andrew Goodman's summer application to work in Mississippi.
President Lyndon Johnson
Former President Lyndon B. Johnson talks on the phone in this 1964 White House photo. After Andrew Goodman, James Chaney and Michael Schwerner went missing on June 21, 1964, President Johnson made finding the three civil rights workers a priority.
The search for Goodman, Chaney and Schwerner
Federal and state investigators probe the swampy area near Philadelphia, Miss., where the burned station wagon of the missing civil rights trio was found June 23, 1964. The civil rights workers, Michael Schwerner, 24, Andrew Goodman, 21, both white and James Chaney, 21, black, were last seen in Philadelphia, Miss., Sunday night, June 21, 1964.
Civil rights workers' car is found
The burned station wagon of three missing civil rights workers was located on June 24, 1964 in a swampy area near Philadelphia, Miss. Only a shell remained. The tires, windows, interior and exterior were completely burned. Andrew Goodman, James Chaney and Michael Schwerner were arrested in the station wagon on June 21, 1964 before they went missing.
Bodies of civil rights workers found
In this undated photo released by the FBI Friday, June 17, 2005, the bodies of three civil rights workers are uncovered from an earthen dam southwest of Philadelphia, Miss. The photograph was entered as evidence by the prosecution in the trial of Edgar Ray Killen, who was accused in the killings of civil rights workers Michael Schwerner, James Chaney and Andrew Goodman.
Bodies of civil rights workers found
In this undated photo released by the FBI Friday, June 17, 2005, the body of a civil rights worker is uncovered from an earthen dam southwest of Philadelphia, Miss. The photograph was entered as evidence by the prosecution in the trial of Edgar Ray Killen, who was accused in the 1964 killings of civil rights workers Michael Schwerner, James Chaney and Andrew Goodman.
Andrew Goodman's funeral
Mrs. Caroline Goodman, center, with Mrs. Fannie Chaney, mother of James E. Chaney, slain civil rights worker, left, and Mrs. Nathan Schwerner, mother of slain Michael Schwerner, are escorted from Ethical Culture Society Hall August 9, 1964, after attending funeral services for her son Andrew Goodman, in New York. Man at right is unidentified. More than 1,200 mourners attended services for Goodman. About 450 persons were outside the hall behind police lines, and another 175 were seated in the hall's basement.
Martin Luther King
In this Dec. 4, 1964 file photo, civil rights leader Dr. Martin Luther King displays pictures of three civil rights workers, who were slain in Mississippi the summer before, from left Michael Schwerner, James Chaney, and Andrew Goodman, at a news conference in New York, where he commended the FBI for its arrests in Mississippi in connection with the slayings. As the burgeoning civil rights movement gathered force in the 1960s, demonstrators were brutalized and killed, sometimes at the hands of law officers. Many slayings remain unsolved. But in some cases where local authorities failed to go after the attackers or all-white juries refused to convict, the federal government moved in with civil rights charges.
Initial trial, 1967
Neshoba County Sheriff Lawrence A. Rainey, right, and deputy Cecil Price, center, pass a Meridian policeman en route to court on the third day of their conspiracy trial in the slaying of three civil rights workers in Meridian, Miss., Oct. 11, 1967. At left is Richard Andrew Willis, another of 18 people charged under an 1870 federal law of conspiring to deprive Freedom Summer activists Andrew Goodman, Michael Schwerner and James Chaney of their civil rights.
Edgar Ray Killen and Cecil Price
In this Oct. 19, 1967 file photo, Neshoba County Sheriff Deputy Cecil Price holds a copy of the Meridian Star newspaper with Edgar Ray Killen as they await their verdicts in the murder trial of three civil rights workers, James Chaney, Andrew Goodman and Michael Schwerner in Meridian, Miss. Of the 18 defendants, Price was convicted on conspiracy charges along with six other defendants. Killen walked out of federal court in 1967 because the jury could not reach a verdict. But in 2005, the former Ku Klux Klansman and one-time Baptist preacher was convicted of manslaughter in the 1964 slayings.
Memorial in Neshoba County, Miss.
J.R. "Bud" and Beatrice Cole show the memorial marker in Neshoba County, Miss., January 6, 1989, to James Chaney, Andrew Goodman, and Michael Schwerner, civil rights workers murdered in 1964. They are flanked by the Mt. Zion Methodist Church, burned by the Ku Klux Klan five days before the murders. The night of the burning, Klansmen beat Cole as he left a meeting at the church, suspected of being a meeting place for civil rights workers.
Clarion-Ledger newspaper investigative reporter Jerry Mitchell sits at a bus stand outside the federal courthouse in downtown Jackson, Miss., Monday, Sept. 21, 2009, where some of Mitchell's subjects have spent their last days of freedom, trying to "beat the rap" for decades-old civil rights crimes that escaped justice. Mitchell's reporting was instrumental in helping secure a conviction against Edgar Ray Killen in 2005.
Edgar Ray Killen
Reputed Ku Klux Klan member Edgar Ray Killen responded loudly with "not guilty" three times, Jan. 7, 2005, as he was arraigned on murder charges in the slayings of three civil rights workers more than 40 years ago, at the Neshoba County Courthouse in Philadelphia, Miss.
Edgar Ray Killen
In this Friday, Jan. 7, 2005 file photo, Edgar Ray Killen, center, stands as Neshoba County District Attorney Mark Duncan, right, reads the indictment charging him with murder in the 1964 slayings of three civil rights workers during his appearance in circuit court in Philadelphia, Miss. Public defender Chris Collins is at left. Killen walked out of federal court in 1967 because the jury could not reach a verdict, but in 2005, the former Ku Klux Klansman and one-time Baptist preacher was convicted of manslaughter in the killings of James Chaney, Andrew Goodman and Michael Schwerner. The trio of Freedom Summer workers had been investigating the burning of a black church near Philadelphia, Miss.
Carolyn and David Goodman
Dr. Carolyn Goodman, the mother of slain civil rights worker Andrew Goodman, leaves the Neshoba County Courthouse escorted by her son, David Goodman on June 17, 2005 in Philadelphia, Mississippi. Goodman, who lives in New York City, testified on the fourth day of the Edgar Ray Killen murder trial.
Dr. Carolyn Goodman, mother of murdered Civil Rights worker Andrew Goodman, gathers herself while testifying in the Edgar Ray Killen Civil Rights Murder Trial June 17, 2005 in Philadelphia, Mississippi.
Victims' families at Killen trial
Rita Schwerner Bender, widow of Michael Schwerner, left, greets, Barbara Chaney Dailey, as her brother Ben Chaney, both siblings of James Chaney, leans forward, during a recess Thursday, June 16, 2005, during the murder trial of Edgar Ray Killen, charged with the 1964 slayings of three civil rights workers including Schwerner and Chaney.
"Mississippi Burning" memorial
A historic marker outside Mt. Zion Church in rural Neshoba County, shown Wednesday, June 17, 1999, briefly tells of the 1964 deaths of three civil rights workers, Michael Schwerner, Andrew Goodman and James Chaney, who were killed June 21, 1964, following the burning of the church, located just outside Philadelphia, Miss. The facility was rebuilt in 1965.
Mt. Zion United Methodist Church
Meridian Mayor Percy Bland, left, holds hands with civil rights activist and widow of civil rights pioneer Medgar Evers, Myrlie Evers-Williams, and Dave Goodman, brother of slain civil rights worker Andrew Goodman during a ceremony at the Mt. Zion United Methodist Church in Philadelphia, Miss., Sunday, June 15, 2014. The commemorative service was for Goodman and two other civil rights workers killed in Neshoba County for their voter registration work among blacks in then segregationist Mississippi.