<P> When asked by Barbara Walters during a 1980s ABC - TV 20 / 20 interview from within the mansion if any of the money to build the lavish home came from Giancana, Phyllis denied the innuendo, claiming that she invested heavily in oil when the sisters were at the height of their popularity . In the same interview, she acknowledged that her relationship with Giancana was in fact a love affair, saying, "When I met him, I did not know who he was, and he was not married, and I was an unmarried woman . And according to the way I was brought up, there was nothing wrong with that . And I didn't find out until sometime later really who he was, and I was already in love ." </P> <P> The sisters reunited in 1986, performing at Toronto's Royal York Hotel for the first time since their retirement . Numerous nightclub engagements followed in Las Vegas, Atlantic City, and New York City's Rainbow & Stars, showcasing the group and Phyllis' impersonations of Peggy Lee, Judy Garland, Pearl Bailey, Ethel Merman, and even Louis Armstrong . </P> <P> Singing their greatest hits as part of their act, they were also featured performing specialty numbers such as the frantic "I Love a Violin", the a cappella "Danny Boy", and a segment during which Phyllis retired backstage as Christine and Dorothy shared the spotlight playing a concert arrangement of "The Way We Were" on twin pianos . Other highlights in the act were a comical Trinidad - flavored tune, a soft rendering of "Memory" from Broadway's Cats, and a "Money Medley", which they also performed live on the Jerry Lewis MDA Telethon in 1994 . Since then, the sisters had made occasional public appearances together, including in 2004, when they reunited to perform in a PBS special Magic Moments: Best of' 50s Pop . The sisters' command of their vocal cords and harmonious blend had not significantly diminished . </P> <P> After their careers wound down, they opened a restaurant in Bradenton, Florida, calling it McGuire's Pub . </P>

When did the mcguire sisters perform on pbs