Bicolor cat in 1939. In its derivative musical, "Cats", the tuxedo cat is exemplified by the character of the magical Mr. Mistoffelees, who is portrayed as a stage magician wearing a lacy ruff and bow tie, as well as the character Bustopher Jones whose outfit consists of a tuxedo and spats. The musical differed from the book in that the characters included cats with many different coat colors, rather than just bicolor cats, but it retains the repeated assertion that "Jellicle cats are black and white." Cats with these markings also played a starring role in the drawings illustrating "The Unadulterated Cat",
What Engineers Know and How They Know It What Engineers Know and How They Know It What Engineers Know and How they Know It: Analytical Studies from Aeronautical History (The Johns Hopkins University Press, 1990) () is a historical reflection on engineering practice in US aeronautics from 1908 to 1953 written by an accomplished practitioner and instructor. This period represents the dawn of aviation which was fraught with uncertainties and numerous paths to many possible worlds. The book captures two main conclusions from this period. The first order conclusion of this book is about "what engineers know." Five case studies from the history of aeronautical engineering are used