Canning novelty. Early methods of manufacture employed poisonous lead solder for sealing the cans. Studies in the 1980s attributed the lead from the cans as a factor in the disastrous outcome of the 1845 Franklin expedition to chart and navigate the Northwest Passage. Later studies found this to be false. Increasing mechanization of the canning process, coupled with a huge increase in urban populations across Europe, resulted in a rising demand for canned food. A number of inventions and improvements followed, and by the 1860s smaller machine-made steel cans were possible, and the time to cook food in sealed cans had
Campbell's Soup Cans On April 7, 2016, seven "Campbell's Soup Cans" prints were stolen from the Springfield Art Museum. The FBI announced a $25,000 reward for information about the stolen art pieces. Warhol's production of Campbell's Soup can works underwent three distinct phases. The first took place in 1962, during which he created realistic images, and produced numerous pencil drawings of the subject. In 1965, Warhol revisited the theme while arbitrarily replacing the original red and white colors with a wider variety of hues. In the late 1970s, he again returned to the soup cans while inverting and reversing the images. Some in