Sketch I, showing the progress of the survey in section no. 9 from 1848 to 1856.
Description:
Map shows towns used for the triangulation of surveyors in the Rio Grande River area of Texas between 1853 and 1856. Includes text "Notes." Inset: "Sketch of Rio Grande and vicinity 1853 & 56." Scale [1:600,000] and [1:400,000].
Date:
1856
Creator:
United States Coast Survey
Item Type:
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Map
Partner:
University of Texas at Arlington Library