Scope and Contents From the Sub-Series: Mostly routine business correspondence. For 1902 and 1903 there are letters from speculators hoping to buy the Hercules. In 1909 there are many letters to and from Fred T. DuBois in Washington, D.C. about the proposed lead tariff. In 1918 and 1919 there are letters from former employees asking about the Liberty Bonds they had purchased while working for the Hercules. Post-1919 correspondence is mainly between Harry Day, Henry Day, and W.H. Hoover of the office staff regarding routine office...