Robert E. Lee engineering notebook

Chicago citation style
Lee, Robert E. (Robert Edward), 1807-1870. Robert E. Lee engineering notebook. 1841 - 1842. Retrieved from the Digital Public Library of America, http://digitalcollections.nypl.org/items/0c7e5c70-9589-0135-40a9-3f2c6062ed1b. (Accessed November 13, 2018.)
APA citation style
Lee, Robert E. (Robert Edward), 1807-1870, (1841 - 1842) Robert E. Lee engineering notebook. Retrieved from the Digital Public Library of America, http://digitalcollections.nypl.org/items/0c7e5c70-9589-0135-40a9-3f2c6062ed1b
MLA citation style
Lee, Robert E. (Robert Edward), 1807-1870. Retrieved from the Digital Public Library of America <http://digitalcollections.nypl.org/items/0c7e5c70-9589-0135-40a9-3f2c6062ed1b>.
Note: These citations are programmatically generated and may be incomplete.