du Pont Explosives pipes were given out as souvenir pipes by the Explosives Department between 1912 and 1933. (Source: Debra Hughes, Curator of Collections and Exhibits, Hagley Museum and Library, Wilmington, DE USA.) | du Pont Explosives pipes were given out as souvenir pipes by the Explosives Department between 1912 and 1933. (Source: Debra Hughes, Curator of Collections and Exhibits, Hagley Museum and Library, Wilmington, DE USA.) |