Consists of various types of personal papers, drawings and other material concerning the inventions of Howard L. Cox, and materials dealing with Cox's participation in an agricultural extension project of the Utah State Agricultural College, (1922-23). The personal papers of Howard L. Cox include: loan applications, irrigation papers, receipts and drafts, and various legal documents. Drawings of Cox's inventions are included in the collection, as well as his patent on an improved steam generator. Many of letters have also been used as scratch paper for accounting homestead improvement, various projects, and sketches.