It's the "Half Pint Library" book drive for the U-W American Family Children's Hospital in Madison.
Between now and March 31st you can drop off books at the Half Price Book stores on Madison's East and West sides.
Everyone is encouraged to donate new or gently used children's books.
The children at the hospital are encouraged to continue reading during their stay... and then they get to take the books home.
Last year, the Madison community donated eight-thousand books... and has donated more than 60-thousand in the eleven years of this drive.