Pearl

Chicago citation style
M. Clark Robertson, 1955 – 1991, M. Clark Robertson, 1955 – 1991. Pearl. 1980. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-27-1&repo=DPLA. (Accessed November 14, 2018.)
APA citation style
M. Clark Robertson, 1955 – 1991, M. Clark Robertson, 1955 – 1991, (1980) Pearl. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-27-1&repo=DPLA
MLA citation style
M. Clark Robertson, 1955 – 1991, M. Clark Robertson, 1955 – 1991. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Achndm_1993-27-1&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.