Periodicals; Chemical industry; Explosives; Dynamite; Plastics industry; Ammunition;
Table of Contents: What of the new year; Five tons of rock per pound of explosives; More economy in secondary shooting; Whence American dyes; A new way of looking at soap; Dynamite breaks into the movies; Explosives in the lumber industry; DuPont...
Text from back of image: "Two "Bristol" 840 h.p. Mercury engines. The first all-metal modern twin-engined monoplane for the R. A. F. to carry the whole of the military load within the structure. Saw service with all the Commands of the R. A. F. and...
Text from back of image: 'Although it has been seven years since Col. Lindbergh flew the Atlantic in the Spirit of St. Louis the plane still commands the interest of thousands of visitors to Washington every year as it hangs in the National Museum.'
Carte de visite from an album possibly assembled by Henry Algernon du Pont. Handwritten caption: "Genl. George Crook USA" George R. Crook was a career army officer who saw extensive service during the Civil War, particularly in General Philip...
