James P. Hanley was born around 1881 and originally worked in the High Explosives Operating Department of E.I. du Pont de Nemours & Company. When DuPont was split up in 1912, Hanley went with the spun-off Atlas Powder Company. In 1918, he was Office Manager at Philadelphia, and by 1920 had been promoted to Director of the Records Division. James P. Hanley died in Weston, Conn., on June 26, 1958, at age 77.
From the description of Powder line notebook, 1918-1923. (Hagley Museum & Library). WorldCat record id: 654473062