Text from back of image: 'Six De Haviland army airplanes, carrying twelve officers of the air service completed their 6,000 mile flight from San Antonio, Texas to Washington, DC, by way of Porto Rico, when they landed at Bolling Field, DC, Tuesday...
Harry S, Truman (left) is sworn in as President of the United States by Chief Justice Harlan Stone in the Executive Offices of the White House, Washington DC. April 12, following the death of Franklin D. Roosevelt at Warm Springs GA. Mrs. Truman is...
Correspondence; Gunpowder; Ordnance industry; Government contracts;
Henry Dearborn requests that the company remanufacture rifle powder for the U.S. War Department using U.S. government saltpeter in the company's possession.
Correspondence; Government contracts; Gunpowder; Ordnance industry;
Dearborn directs the company to extract saltpeter from damaged gunpowder for the U.S. government. He references the Du Pont Company's interest in proving powder and remanufacturing gunpowder for the U.S. government.
Correspondence; Government contracts; Gunpowder; Ordnance industry;
Mason describes government trade with Native Americans at western trading posts (factories) and writes that he believes Du Pont gunpowder will satisfy Native American traders at these posts.
