Blockhouse drawing, sheet No. 4

Chicago citation style
Rieman and Day. Blockhouse drawing, sheet No. 4. 1864-04. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll19/id/57. (Accessed January 24, 2019.)
APA citation style
Rieman and Day, (1864-04) Blockhouse drawing, sheet No. 4. Retrieved from the Digital Public Library of America, http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll19/id/57
MLA citation style
Rieman and Day. Retrieved from the Digital Public Library of America <http://cdm15138.contentdm.oclc.org/cdm/ref/collection/p15138coll19/id/57>.
Note: These citations are programmatically generated and may be incomplete.