1991.064.209
Print, Photographic
Black and white photographic print depicting a Champion Spark Plug Co. product display at a trade show. A woman operates an insulator testing demonstration. A sign reads, "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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