Carborundum Grinding Wheel Calculator Slide Rule

Chicago citation style
Bastian Brothers Company. Carborundum Grinding Wheel Calculator Slide Rule. 1940-1941. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1215003&repo=DPLA. (Accessed November 14, 2018.)
APA citation style
Bastian Brothers Company, (1940-1941) Carborundum Grinding Wheel Calculator Slide Rule. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1215003&repo=DPLA
MLA citation style
Bastian Brothers Company. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1215003&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.