Black and white advertisement from the International Nickel Company, Inc. highlighting the use of nickel to produce corrosion-resisting stainless steel for a variety of applications. The advertisement features an illustrated depiction of four women packaging penicillin for distribution, while the accompanying text details nickel's role as the "unseen friend" guarding product purity and preventing contamination. This advertisement appeared on page 103 of the April 27, 1946 edition of The Saturday Evening Post.