Hill, David Elon Musk: The Business & Life Lessons of a Modern Day Renaissance Man (Business Principles From the World's Most Powerful Entrepreneur)
Hill, David Jayne 1850-1932 The Elements of Rhetoric and Composition: a Text-book for Schools and Colleges
Hill, David Spence Introduction to Vocational Education: A Statement of Facts and Principles Related to the Vocational Aspects of Education Below College Grade