1991.064.056
Print, Photographic
Black and white photographic print depicting the tops of several mixing tanks at the Champion Spark Plug Co. A man peers through a window in the top of one of them. A valve in the foreground is labeled "Lunkenheimer".
Caption on verso reads, "Dept. 2 - 4th floor, looking down the tops of the vacuum mixing tanks; tried to include the conveyors which fill the vacuum mixing tanks."
Dated 5-7-1949
