Part of the boundary between the United States and Texas, from Sabine River northward to the 36th mile mound / drawn from the notes of survey and copied for the use of the commissioners under the Convention of 25th April 1838, by J. Edm.d Blake 1st Lieut.
MLA
Blake, Jacob Edmund, 1811 or 12-1846. Part of the boundary between the United States and Texas, from Sabine River northward to the 36th mile mound / drawn from the notes of survey and copied for the use of the commissioners under the Convention of 25th April 1838, by J. Edm.d Blake 1st Lieut.. BRBL_00530. 1842?]. https://collections.library.yale.edu/catalog/15811555.
APA, 6th edition
Blake, Jacob Edmund, 1811 or 12-1846. (["BRBL_00530"])(1842?])[Part of the boundary between the United States and Texas, from Sabine River northward to the 36th mile mound / drawn from the notes of survey and copied for the use of the commissioners under the Convention of 25th April 1838, by J. Edm.d Blake 1st Lieut.]. https://collections.library.yale.edu/catalog/15811555.