Map of the United States and Texas boundary line and adjacent territory determined & surveyed in 1857-8-9-60 by J.H. Clark, U.S. Commissioner, &c &c. under the direction of the Departement [sic] of the Interior
"Bulletin no. 194, pl. I." Originally published in: Report of the commissioner of the General Land Office upon the survey of the United States and Texas Boundary Commission. Washington : Govt. Printing Office, 1882.