Continuing a successful career as a concert performer in Las Vegas, Wilson also worked in activism, fighting to pass Truth in Music Advertising bills and donating to various charities.

[6] In 1959, Ballard asked Wilson to audition for Milton Jenkins, who was forming a sister group to his male vocal trio, the Primes (two members of which were later in The Temptations).

[10] In 1960, the Primettes signed a contract with Lu Pine Records, issuing two singles from which Wilson sang lead vocals on "Pretty Baby".

[22] To serve as a stand-in for Ballard, Gordy selected Cindy Birdsong, a member of Patti LaBelle and the Blue Belles.

In 1968, Wilson sung lead on "The Ballad of Davy Crockett", a cover the group recorded for their album Diana Ross & the Supremes Sing Disney Classics in 1968.

In 1969, Wilson sang the duet "Can't Take My Eyes Off You" (a Frankie Valli cover) with Eddie Kendricks for the album Together, in preparation for Ross' departure from the Supremes with many assuming she would step up and eventually take the lead in the group.

The Wilson-Birdsong-Terrell lineup recorded seven top-40 hit singles in a three-year period, including "River Deep/Mountain High" (with the Four Tops), "Up the Ladder to the Roof", "Stoned Love", "Nathan Jones", and "Floy Joy".

For the first time in a decade, two singles in a row failed to break into the top 40, including the Stevie Wonder penned-and-produced "Bad Weather".

In 1975, Wilson sang lead on the Top 10 disco hit "Early Morning Love", which was released as a single in the United Kingdom only from the album, The Supremes.

In 1976, the group scored its final Top 40 hit single with "I'm Gonna Let My Heart Do the Walking", written and produced by Brian and Eddie Holland and included on the album High Energy.

[33] Birdsong again departed, just before the album's release, and was replaced by the group's final official member, Susaye Greene, whose voice was dubbed over two songs.

[37] The show was the result of Motown's allowance of the group to go into hiatus despite the fact that there were still several uncancelled international tour dates to complete.

Mary therefore hired former Supreme, Cindy Birdsong and Debbie Sharpe to complete a summer tour of South America to fulfill contracts so venues would not sue.

She and Cindy rehearsed them for a year end's tour of Europe, that was composed of dates at officers' clubs and swank discos.

[39] After an out-of-court settlement, Wilson signed with Motown for solo work, releasing a disco-heavy self-titled album in August 1979.

[41] Throughout the mid-1980s, Wilson focused on performances in musical theater productions, including Beehive, Dancing in the Streets, and Supreme Soul.

Early in the program, Wilson made a brief tribute to Florence Ballard, and former label mate Paul Williams of the Temptations.

In between this period, Wilson became a frequent guest on several television programs and talk shows and began regularly performing in Las Vegas casinos and resorts.

In 2004, Wilson joined Cindy Birdsong and Kelly Rowland (of Destiny's Child) to perform a medley of Supreme hits for the Motown 45 anniversary television special.

[52] In April 2008, Wilson made a special appearance on 20/20 to participate in a social experiment involving pedestrians reacting to a young woman singing "Stop!

Wilson approached the woman and gave her constructive criticism toward her style, in contrast to the pedestrians whose reactions were positive, yet dishonest.

The collection has been on exhibit at the Rock & Roll Hall of Fame in Cleveland, Ohio and on May 12, 2008, commenced its UK tour, starting at the Victoria and Albert Museum in London.

In 2015, Wilson released a new single, "Time To Move On", produced by Sweet Feet Music; the song reached the Top 20 on the Billboard Dance charts history, peaking at No.

In 2016, an Indiegogo campaign was launched to help raise $35,000 to fund a gay-themed romantic comedy movie, "Please Don't Eat the Pansies".

[59] Another posthumous project, Mary Wilson: Red Hot Eric Kupper Remix EP was released September 3, 2021.

[65] In January 1994, Wilson and her 14-year-old son Rafael were involved in an accident on Interstate 15 between Los Angeles and Las Vegas when their Jeep Cherokee veered off the highway and overturned.

[66] On February 8, 2021, Wilson died in her sleep from hypertensive atherosclerotic cardiovascular disease at her home in Henderson, Nevada, a suburb of Las Vegas, at the age of 76.

[67][5][68] Two days before her death, she had announced on YouTube that she was planning to release new solo material with Universal Music Group, and hoped it would come out before March 6, her 77th birthday.

[67] Motown founder Berry Gordy said he was "extremely shocked and saddened" by the news of her death and said Wilson was "quite a star in her own right and over the years continued to work hard to boost the legacy of the Supremes.

The recordings where she had lead vocals are listed below: "Love Talk" / "Save Me" / "You Danced My Heart Around the Stars" / "Green River"