Helmet plate

Chicago citation style
Helmet plate. before 1915. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/396. (Accessed September 21, 2019.)
APA citation style
(before 1915) Helmet plate. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/396
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll29/id/396>.
Note: These citations are programmatically generated and may be incomplete.