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1869

Title Page: Geological report of the Exp …

Exploration Book

(Title Page to) Geological Report of the …

1881

Section along 36th parallel Rio Grande-C …

Exploration Book

Section along 36th parallel from the Rio …

1881

Section along 37th parallel, Rio Grande- …

Exploration Book

Section along 37th parallel from the Rio …

1874

Geological map US.

Statistical Atlas

Geological map of the United States comp …