Photograph of an interior view of the Thermador Electrical Manufacturing Company, 1953. To the right of center, a row of rectangular metallic objects stands on a concrete floor. The four identical rectangular boxes are numbered one through four with a sheets of paper covered in plastic hanging from the door handles. Each object has two handles attached to two doors. A pipe extends out of the top of each device and leads to the left. To the left, a darkly colored pane sits against a wall with wires streaming out of various gauges. To the left, two short cylindrical objects sit on the floor. Back of photograph reads, "4. Oven room for varnish vacuum impregnation and backing."