Color print advertisement for Ethocel, the brand name for Dow Ethylcellulose marketed for its flexibility and shock resistance under extreme high and low temperatures. The advertisement shows a close-up illustration of a handheld microphone designed for aviation communication. In the background is an illustration of a man in a coat and flying cap using a similar microphone. The accompanying text notes that the handle and housing of the microphone are made from Ethocel, which can withstand extreme cold. Notably, the advertisement was produced during World War II and bears the Company's wartime tagline "Dow: Chemicals Indispensable to Industry and Victory."