Letter, To: "My dear Siss" (Mary O'Reilly) From: Robert, May 1, 1864.

Chicago citation style
O'Reilly, Robert M. (Robert Maitland), 1845-1912. Letter, To: "My dear Siss" (Mary O'Reilly) From: Robert, May 1, 1864.. 1864. Retrieved from the Digital Public Library of America, https://digital.library.villanova.edu/Record/vudl:416540. (Accessed September 23, 2018.)
APA citation style
O'Reilly, Robert M. (Robert Maitland), 1845-1912, (1864) Letter, To: "My dear Siss" (Mary O'Reilly) From: Robert, May 1, 1864.. Retrieved from the Digital Public Library of America, https://digital.library.villanova.edu/Record/vudl:416540
MLA citation style
O'Reilly, Robert M. (Robert Maitland), 1845-1912. Retrieved from the Digital Public Library of America <https://digital.library.villanova.edu/Record/vudl:416540>.
Note: These citations are programmatically generated and may be incomplete.