I have an early powder can of Laflin & Rand, (with powder) so I googled Laflin & Rand and came up with this. This is just meant to add to the info given by ricciardelli.
The shotgun powder in my can, called, "INFALLIBLE." is completely different to the powder in the Du Pont can in the picture. The L & R powder is black and very thin, tiny flakes. Interestingly, (Ben,) it takes much less of this powder, only 1 1/8 to 1 1/2 drams, for the 12 guage.
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The Laflin & Rand Powder Company was DuPont's leading post-Civil War competitor in the explosives industry, but also an important partner in the Gunpowder Trade Association (GTA). After manufacturing saltpeter for the Massachusetts militia during the Revolutionary War, Irish-born Matthew Laflin built a powder mill in Southwick, Massachusetts, and successfully entered the explosives business. After Laflin died in 1810, his descendants expanded the family business into New York. To better handle the growing complexities of business after the Civil War, the partners incorporated the firm in 1866 as the Laflin Powder Company. A year later, Albert Tyler Rand of the competing Smith & Rand Powder Company proposed uniting the two firms, and in 1869 both sides agreed to merge into the Laflin & Rand Powder Company of New York, with Rand as the new firm's first president.
In 1872 Laflin & Rand collaborated with friendly rival DuPont to establish the GTA, a trust comprising the nation's top explosives manufacturers that sought to regulate the powder industry with price controls, protected territories and sales quotas. The two companies likewise cooperated in the emerging high explosives, or dynamite, field jointly establishing the Repauno Chemical Company in 1880, the Hercules Powder Company in 1882, and the Eastern Dynamite Company in 1895. Their combined efforts at industry consolidation and control were so successful that by 1900, Laflin & Rand and DuPont together commanded over two-thirds of the entire explosives industry.
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It goes on to say that in 1902 Du Pont purchased Laflin & Rand, operating it until near 1912, when the company was disolved.