Saint Lawrence River chart no. 6 : projected from trigonometrical surveys / executed under the orders of Major C. B. Comstock, Corps of Engineers, Brvt. Brigadier Gen. U.S.A. in 1871, 1872 and 1873 ; Topography and hydrography by Assistant Engineers J.R.
MLA
Survey, U. S. Lake. Saint Lawrence River Chart No. 6 : Projected from Trigonometrical Surveys / Executed under the Orders of Major C. B. Comstock, Corps of Engineers, Brvt. Brigadier Gen. U.S.A. in 1871, 1872 and 1873 ; Topography and Hydrography by Assistant Engineers J.R. Corps of Engineers, 1876. https://collections.library.yale.edu/catalog/15536001.
APA, 6th edition
Survey, U. S. L. (1876). Saint Lawrence River chart no. 6 : projected from trigonometrical surveys / executed under the orders of Major C. B. Comstock, Corps of Engineers, Brvt. Brigadier Gen. U.S.A. in 1871, 1872 and 1873 ; Topography and hydrography by Assistant Engineers J.R. [Maps]. Corps of Engineers, https://collections.library.yale.edu/catalog/15536001.
