Samuel Clemens and Isabel Lyon

Chicago citation style
William Ireland Starr, active c. 1908. Samuel Clemens and Isabel Lyon. 1908. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.80.322.A&repo=DPLA. (Accessed December 19, 2018.)
APA citation style
William Ireland Starr, active c. 1908, (1908) Samuel Clemens and Isabel Lyon. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.80.322.A&repo=DPLA
MLA citation style
William Ireland Starr, active c. 1908. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anpg_NPG.80.322.A&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.