Tufts' diary for 1878 is devoted entirely to his work as assistant engineer for the Union Pacific Railroad. His daily activity is described along with any expenses he incurred. To a large extent he is involved in the surveying for new track and the laying and maintenance of tracks. Very little of his personal life is mentioned.

Front end paper states: Free Tufts Genl Office C.B.U.R.R. Atchison, Kansas 6Jany1878.