What we have here are 23 original, antique geological engravings of extinct Mammalia and Chelonia (mammals and reptiles) of Wisconsin, Iowa, Minnesota, and the Nebraska Territory.   They date to 1852 and were once bound in a book called Report of the Geological Survey of Wisconsin, Iowa, and Minnesota; and Incidentally of a Portion of Nebraska Territory.  Made Under Instructions from the United States Treasury Department by David Dale Owen, United States Geologist, published in Philadelphia by Lippincott, Grambo & Co. in 1852.  These engravings were salvaged from what was left of the book when I got it, having been stripped of maps and other plates long ago. 

The engravings measure 12-1/4" x 9" and are printed on a heavier grade of quality art paper.  At the bottom of each engraving is printed the name of the artist and the engraver. Some of the engravings are a bit more spectacular than others, as fossils go, but each is suitable for displaying or framing. 

The engravings have some foxing (little brown spots) or tanning (darkening) due to age, but are in very good condition. They still have their tissue guards attached, identifying each engraving. Whoever removed the plates from the book wasn't too careful with his razor blade, creating a cut to the far margin of  two of the engravings (see pic), but this does not affect the images or borders. No rips or tears, no repairs. Clean, no odors, non-smoking environment. 

LIST OF ENGRAVINGS: 

• Trilobites of the Lowest Sandstones of Wisconsin and Minnesota. 
• Trilobites and Fucoidal Impressions, From the Lowest Protozoic sandstones, F. I., or Wisconsin and Minnesota
• Specimens Containing Lingula, Orolus and Orbicula-, from Near the Base of the Lowest Protozoic Sandstones of Wisconsin and Minnesota
• Fossil Plants (?) from the Red Sandstones on the Southwest Shore of Lake Superior
• Trilobites .... from the Red Sandstones of Lake Superior
• Trilobites and a Brachiopod from the Protozoic Rocks of the Northwest
• Fossils of the Shell Beds and Overlying, Lead-Bearing Beds of the Upper Magnesian Limestone of Wisconsin, Iowa and Minnesota
• Spirifers, Orthis and Strophodonta from the Shell-Beds of the Iowa and Cedar Rivers, Belonging to the Devonian Period
• Fossils, Shells and Corals from the Carboniferous Limestone and From the Adjacent Limestones of Iowa of the Age of the Hamilton Group of New York
• Fossil Corals from the Carboniferous Rocks of Iowa
• Fossil Shells from the Carboniferous Limestones of Iowa and Nebraska
• New Species of Crinoidea of the Carboniferous Limestone (continues)
• New Species of Crinoidea of the Carboniferous Limestone 
• Lepidodendrons and Fossil Ferns, Characteristic of the Carboniferous Sandstones, Muscatine Quarries, Iowa
• Ammonites and Scaphites, from the Cretaceous Formation of Nebraska
• Inoceramus and Ammonite, from the Cretaceous Formation of Nebraska
• Remains of Archaeotherium and Oreodon of the Eocene Tertiary of Nebraska
• Remains of the Rhinoceros and the Gigantic Paaeotherium of the Eocene Tertiary of the Mauvaises Terres of Nebraska
• Additional Remains of Arcileotherium and Oreodon
• The Species of Land Turtles, Machairodus, or Saber-Toothed Tiger, and a Small Species of Rhinoceros, From the Eocene Tertiary of Nebraska
• Remains of a Land Turtle, Rhinoceros and Palaeotherium, from the Eocene Tertiary of Nebraska.....
• Remains of Archaeothrium and Oreodon from the Eocene Tertiary of Nebraska
• Remains of the Rhinoceros, from the Eocene Tertiary of Nebraska
• Remains of a Land Turtle, Rhinoceros and Palaeotherium, from the Eocene Tertiary of Nebraska

Thank you!