Author and illustrator talk about making "Shortest Day" poem into a children's book

Author and illustrator talk about making "Shortest Day" poem into a children's book For NPR's series "Picture This," illustrator Carson Ellis talks about working with author Susan Cooper to make Cooper's poem "Shortest Day" into a children's book. SUSAN COOPER: So the shortest day came, and the year died, and everywhere down the centuries of the snow-white world came people singing, dancing to drive the dark away. SIMON: For more than 40 years, people have been reading and performing Susan Cooper's poem "The Shortest Day" to celebrate the winter solstice. For "The Shortest Day," Susan Cooper collaborated with Carson Ellis, the illustrator, by mail.