Keywords: dinosaurs nature exhibits smithsonian probably public domain probablypublicdomain animal indoor SI Neg. 77-8475. Date: 1977...Mammoth, Ice Age Hall, National Museum of Natural History ..Credit: Dane A. Penland (Smithsonian Institution) SI Neg. 77-8475. Date: 1977...Mammoth, Ice Age Hall, National Museum of Natural History ..Credit: Dane A. Penland (Smithsonian Institution) |