Ceramic Arts Studio Mama Bunny Rabbit & Baby Salt & Pepper Shakers mid-century?

Up for auction is is a pair of Vintage Salt & Pepper Shakers from Ceramic Arts Studio, Madison, Wisconsin.
They are a Mama Bunny Rabbit and her baby. The baby bunny sits on her Mama's lap.
I think these are from around the 1940's
They have no Chips or Cracks. They also don't have any Stoppers.