Open Hearth Furnaces - Workman making bottom. Homestead Steel Works. Penna

Chicago citation style
Not Known. Open Hearth Furnaces - Workman making bottom. Homestead Steel Works. Penna. [Date not indicated]. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt267nc0h8. (Accessed October 18, 2018.)
APA citation style
Not Known, ([Date not indicated]) Open Hearth Furnaces - Workman making bottom. Homestead Steel Works. Penna. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt267nc0h8
MLA citation style
Not Known. Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt267nc0h8>.
Note: These citations are programmatically generated and may be incomplete.