Furnace and heating unit of new post office

Chicago citation style
Furnace and heating unit of new post office. 1910. Retrieved from the Digital Public Library of America, http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll8/id/449. (Accessed December 9, 2018.)
APA citation style
(1910) Furnace and heating unit of new post office. Retrieved from the Digital Public Library of America, http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll8/id/449
MLA citation style
Retrieved from the Digital Public Library of America <http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll8/id/449>.
Note: These citations are programmatically generated and may be incomplete.