Rocks to Roads 02: Plowing a rocky field with horses.

Chicago citation style
Rocks to Roads 02: Plowing a rocky field with horses.. ca. 1915. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/nbhs/id/123. (Accessed May 27, 2020.)
APA citation style
(ca. 1915) Rocks to Roads 02: Plowing a rocky field with horses.. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/nbhs/id/123
MLA citation style
Retrieved from the Digital Public Library of America <http://content.mpl.org/cdm/ref/collection/nbhs/id/123>.
Note: These citations are programmatically generated and may be incomplete.