Carolyn Bryant is STILL alive. The other wife, Juanita Milam passed in 2014.
Widow of Emmett Till killer dies quietly, notoriously
Whatever Juanita Milam knew about the 1955 murder of a Chicago teen may have died with her.
http://www.usatoday.com/story/news/nation/2014/02/27/emmett-till-juanita-milam/5873235/
Read the comments. Supposedly JW Milams son is a prosecutor in Georgia, and has wrongfully convicted hundreds of black people.
Side note: I recall reading somewhere that it was known locally that JW Milam was actually fuckin Carolyn Bryant...his half brothers wife! Emmitt Till came in the store and saw what was happening.
The story was contrived that he whistled at her to cover themselves and they plotted to kill him to keep him from mentioning it. The assertion was supposedly backed up by the inconsistent testimony from the wives at the trial, concerning JW's whereabouts and the use of a car. I wish I could find it. It was an interesting read and seemed plausible.