In Dick’s Pocket Book Dick notes birds he has seen and things he wants to remember, e.g. his mother’s birthday (illustrations, WH5). In Winter Holiday Nancy wrote out the Morse alphabet … in Dick’s private pocket-book of scientific notes (WH5). After rescueing the sheep he pulled out his pocket book and scrawled (with frozen fingers) "Saw buzzards nest". (WH12). At the North Pole he digs in his pocket and shows Nancy the entry about the flag: (WH28) . In Great Northern? it is called a note book (GN6); he sketches the mysterious Diver, and later shows it to Mr Jemmerling (GN9).