National Model 9H Adding Machine

Chicago citation style
Allen Wales Adding Machine Division, the National Cash Register Company. National Model 9H Adding Machine. 1951. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_690635&repo=DPLA. (Accessed November 13, 2018.)
APA citation style
Allen Wales Adding Machine Division, the National Cash Register Company, (1951) National Model 9H Adding Machine. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_690635&repo=DPLA
MLA citation style
Allen Wales Adding Machine Division, the National Cash Register Company. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_690635&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.