Vertebrate Paleontology Hall, NHB, by Unknown, c. 1930, Smithsonian Archives - History Div, View is of a portion of the Vertebrate Paleontology Hall, or Dinosaur Hall, in the United States National Museum's (USNM) Natural History Building (NHB), now known as the National Museum of Natural History (NMNH). The exhibit shows dinosaur skeletons and dinosaur models. At the time of this picture the exhibit was called the "Hall of Extinct Monsters." A papier mache reproduction of a Stegosaurus is at the center and a skeleton of a Triceratops is behind it..