Plano topografico que comprende las vertientes del Arroyo Ycabaqua, las del Rio Negro y la cresta que divide aguas al Yacuy y al Uruguay hasta la Sierra de los Tapes o Montegrande /

Shows central portion of Rio Grande do Sul.
Boundaries shown in red and yellow inks?
Relief shown by shading.
Pen-and-ink and watercolor.
In upper margin: No. 4o.
LC Luso-Hispanic World, 183
Available also through the Library of Congress Web site as a raster image.
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