How to Win Friends and Influence People in the late 19th and early 20th centuries. Dale Carnegie began his career not as a writer, but as a teacher of public speaking. He started out teaching night classes at a YMCA in New York and his classes became wildly popular and highly attended. The success of the classes in New York prompted YMCAs in Philadelphia and Baltimore to begin hosting the course as well. After even greater success, Carnegie decided to begin teaching the courses on his own at hotels in London, Paris, New York, Boston, Philadelphia, and Baltimore. Because he could not find any satisfactory handbook already
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