The Donald J. Angus Papers consist of records relating to the engineering activity of Donald J. Angus, part owner of the Esterline Angus Company. Most correspondence relates to the early years of the company from 1914-1918. It has been established that the later correspondence and other records were destroyed when this proprietary firm was sold in 1960. The fiscal records are, however, fairly complete, covering the years 1915-1958.