What author, who the Princess Sarah anime series is based on, also wrote The Secret Garden?
Princess Sarah: Princess Sarah (小公女(プリンセス)セーラ , Purinsesu Sēra ) , also known as "Little Princess Sara(h)", is a 1985 Japanese anime series produced by Nippon Animation and Aniplex, based on Frances Hodgson Burnett's novel, "A Little Princess".
i don't know