Heather North was an American actress best known as the definitive voice of Daphne Blake in the Scooby-Doo franchise for over 30 years. She took over the role from Stefanianna Christopherson in 1970 during the second season of Scooby-Doo, Where Are You! and continued to voice the character across various series and films until 2003.
Hanna-Barbera Presents: A Treasury Of Cartoon Classics (1987)
as Daphne Blake (voice) (archive footage)