From kittens to cows to bowls of mush, the familiar images from his father's illustrations inspired Thacher Hurd with the idea for Goodnight Moon 123 . These comforting images find new expression in this counting companion to the classic bedtime book.From kittens to cows to bowls of mush, the familiar images from his father's illustrations inspired Thacher Hurd with the idea for Goodnight Moon 123 . These comforting images find new expression in this counting companion to the classic bedtime book.