Letter from John Muir to Osborn [family], [1912] Mar 15

Chicago citation style
John Muir. Letter from John Muir to Osborn [family], [1912] Mar 15. [1912] Mar 15. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt2h4nf0dk. (Accessed December 16, 2018.)
APA citation style
John Muir, ([1912] Mar 15) Letter from John Muir to Osborn [family], [1912] Mar 15. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt2h4nf0dk
MLA citation style
John Muir. Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt2h4nf0dk>.
Note: These citations are programmatically generated and may be incomplete.