General view of an unidentified employee using an Atlas Weather-O-Meter in the Dow Chemical Company's Coatings Technical Service department, which developed a range of materials used to improve the performance of paints…

General view of the exterior of a section of a Dow Chemical Company plant in Midland, Michigan.

General view of the interior of a section of the Dow Chemical Company Glycol plant located in Midland, Michigan.

General view of the exterior of a section of the Dow Chemical Company Ethylene plant located in Midland, Michigan.

General view of the production of magnesium sheets at a Dow Chemical Company plant in Midland, Michigan. As visible in the photograph, magnesium sheets were cold-rolled on mills during production, while hot mills served…

General view of two unidentified employees surveying a tank used for waste disposal at the Dow Chemical Company plant in Midland, Michigan.

General view of the hydrocarbon crackers at the Dow Chemical Company Hydrocarbons plant located in Midland, Michigan. Hydrocarbons are compounds of hydrogen and carbon that often occur in petroleum and natural gas and…

General view of a section of the waste disposal facilities at the Dow Chemical Company plant in Midland, Michigan.

General view of the construction of a waste disposal facility at the Dow Chemical Company plant in Midland, Michigan.

Interior view of a section of the South Side Power House at a Dow Chemical Company plant in Midland, Michigan.

General view of the ethyl benzene cracking towers at a Dow Chemical Company plant in Midland, Michigan. Ethyl benzene is commonly used to manufacture polystyrene plastics, engineering plastics, and synthetic rubber.

Interior view of a section of the South Side Power House at a Dow Chemical Company plant in Midland, Michigan, showing a control panel and two unidentified employees.

Aerial view of the Dow Chemical Company plants and facilities located in Midland, Michigan. This photograph was taken by H. H. Harris, President of the General Alloys Company of Boston and amateur photographer who…

General view of a section of the Dow Chemical Company's Chlorobenzene Plant located in Midland, Michigan. Chlorobenzene is commonly used to produce pharmaceuticals, specialty chemicals, plastics, glazing materials,…

Aerial view of the Dow Chemical Company plants and facilities located in Midland, Michigan. This photograph was taken by H. H. Harris, President of the General Alloys Company of Boston and amateur photographer who…

Aerial view of the Dow Chemical Company plants and facilities located in Midland, Michigan. This photograph was taken by H. H. Harris, President of the General Alloys Company of Boston and amateur photographer who…

Exterior view of the main office building at the Dow Chemical Company's headquarters in Midland, Michigan.

General view of an unidentified employee assembling sample panels in the Dow Chemical Company's Coatings Technical Service department. The department commonly developed a range of materials used to improve the…

Interior view of the Dow Chemical Company's lead arsenate plant with partial view of industrial machinery and barrels used for storage and transport. An inorganic pesticide, lead arsenate was first used to combat gypsy…

General view of raw material and manufacturing facilities used for the production of lime sulfur at an unidentified Dow Chemical Company plant. Beginning in 1907, Herbert Dow marketed lime sulfur, also known as calcium…

General view of employees at work in the Engineering Department at the Dow Chemical Company's headquarters in Midland, Michigan. Assorted blueprints and papers are visible on the drafting tables arranged throughout the…

General view of chemist Roger Monroe working with a still in the Dow Chemical Company's Bush Aromatics Research Department.

General view of an unidentified employee holding a mouse while standing in front of several rows of cages used to house mice at the Dow Chemical Company's Biological Chemical Laboratory. The laboratory commonly…

General view of a brine well at the Dow Chemical Company facilities in Midland, Michigan. Also known as salt wells, brine wells are used to extract salt from subterranean caverns or deposits for use in a variety of…

General view of an unidentified employee weighing a rabbit in the Dow Chemical Company's Biological Chemical Laboratory. Several rows of pens containing other rabbits are visible in the background. The laboratory…