Chronicle Books has completed the purchase of the children's imprint SeaStar Books from North-South Books. The deal adds about 90 titles, primarily illustrated books, to Chronicle's children's list. Chronicle will maintain the SeaStar name as an imprint, although the company may tweak which titles appear under the imprint in the future, a spokesperson said. The first titles to be released by Chronicle as a result of the purchase will be Doors by Roxie Munro and two titles in the Seymour Simon series SeeMore Readers. The books will be part of Chronicle's spring list.