1991.064.208
Print, Photographic
Black and white photographic print depicting a Champion Spark Plug Co. product display at a trade show. Signs read, "Mechanical Strength Test, Ford-Champion Spark Plugs, An Outstanding Advantage of Champion Sillimanite Insulators" and "A Production Test of Ford-Champion Spark Plugs, From 100 F. below zero dry ice to 1800 F. in one minute, Silliminite insulators are exclusively Champion". The backdrop reads, "Ford Equipment Since 1911".
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