Civil Defense Oxygen Poster. Material: paper. Size: 10 3/4" x 10 3/4". Description: 2 sided poster, side 1: yellow background; black print: "Oxygen, 5, PL-16, Labelmaster, Chicago, IL 60660"; graphic of flames on top of a circle; side 2: black and yellow background; white and black print: "Empty, Oxygen, 5, 2S-16, Labelmaster, Chicago, IL 60660."
