File also contains a letter from possibly Walter F. Simon (signed W.), two letters from Inge Goodwin, and a postcard from 'Joan', with the former two correspondents including research material concerning Simon's work on Frederick the Great. Also included are manuscript notes on the book's structure and chapter outlines; a family tree representing Frederick's ancestral pedigree; a typescript booklist of titles Simon requests for her research purposes; and three news and magazine cuttings concerning Henry VIII, George III, and possibly the artist Johannes Vermeer.