Keywords: dinosaurs nature exhibits smithsonian probably public domain probablypublicdomain indoor SI Neg. 77-10004. Date: 1977...Mammoth, Ice Age Hall, National Museum of Natural History ..Credit: Chip Clark (Smithsonian Institution) SI Neg. 77-10004. Date: 1977...Mammoth, Ice Age Hall, National Museum of Natural History ..Credit: Chip Clark (Smithsonian Institution) |