Originally was the saga of a working mom raising her three sons alone while her pilot husband was away, but after star Valerie Harper left, Sandy Duncan stepped in as the boys' aunt.Originally was the saga of a working mom raising her three sons alone while her pilot husband was away, but after star Valerie Harper left, Sandy Duncan stepped in as the boys' aunt.Originally was the saga of a working mom raising her three sons alone while her pilot husband was away, but after star Valerie Harper left, Sandy Duncan stepped in as the boys' aunt.
