[4]: 7–8 From 1963 to 1967, they teamed up with Jack Nissenson and Peter Weldon to form the folk group Mountain City Four.
[4]: 9–10 The sisters wrote, recorded and performed music into the twenty-first century with assorted accompanying musicians, including Chaim Tannenbaum and Joel Zifkin.
[5] In 2016 Anna and her older sister Jane (1941-2025) wrote a book together, Mountain City Girls.
[6] McGarrigle married journalist Dane Lanken on August 25, 1977, in Hawkesbury, Ontario.
[7] The duo's albums Matapedia (1996) and The McGarrigle Hour (1998) won Juno Awards.