E. F. Johnson Company Employee. LeRoy Hildebrandt. 6 1/4" x 5" black and white photograph of the interior of the E. F. Johnson Co. showing employee, LeRoy "Bud" Hildebrandt monitoring the air distribution system in the industrial area; brochure states, "Atmospheric and humidity control, elaborate artificial atmosphere system carefully controls temperature and humdity as dust and foreign matter is automatically removed from the air." Photographed by Huneke Studio, Waseca, Minn.; photograph printed in company brochure. Huge fans, a labyrith of duct-work, heating and cooling coils occupy the penthouse areas of the new E.F. Johnson Co. factory. Here LeRoy "Bud" Hildebrandt is at the controls of the air washing, filtering and air distribution system.
