E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. This collection consists of six safety calendars issued by the DuPont Company. The illustrators who created these calendars--Stanley Massey Arthurs (1877-1950), Clyde Osmer DeLand (1872-1947), Gayle Porter Hoskins (1887-1962), and Frank Earle Schoonover (1877-1972)--were all artists who studied under Howard Pyle (1853-1911) at the turn of the twentieth century.

Gayle Porter Hoskins (1887-1962) was an artist and illustrator active between the 1910s through the 1960s. This collection consists of two prints of Hoskins artwork related to rifles.

The Hercules Powder Co. was one of companies created from the break up of the E.I. du Pont de Nemours "powder trust" in 1911 as ruled by a U.S. Supreme Court decision. The Laflin and Rand Powder Company, one of the largest gunpowder manufacturers in the nineteenth century, was formed from several predecessor companies, including the Laflin Powder Company and the Smith & Rand Powder Company. This collection consists of a Hercules Powder Company calendar from 1919 and an undated illustration from a company calendar. There are also reproductions of a group of three different display card advertisements for Laflin & Rand Powder Company, probably for point-of-sale or counter display.