Letter from John Muir to [Catharine Merrill], [1871] Jul 12

Chicago citation style
John Muir. Letter from John Muir to [Catharine Merrill], [1871] Jul 12. [1871] Jul 12. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt429033gr. (Accessed December 18, 2018.)
APA citation style
John Muir, ([1871] Jul 12) Letter from John Muir to [Catharine Merrill], [1871] Jul 12. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt429033gr
MLA citation style
John Muir. Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt429033gr>.
Note: These citations are programmatically generated and may be incomplete.