Antiquities History 80 Indians of South America 45 Excavations (Archaeology) 42 Indians of Mexico 37 Indians of North America 30 Archaeology 29 Periodicals 27 Mayas 25 Civilization 23 Description and travel 18 Prehistoric peoples 18 Indians of Central America 16 Aboriginal Australians 15 Art 15 Architecture 14 Ethnology 14 Indian art 14 Conservation and restoration 13 Exhibitions 12 Man, Prehistoric 12 Congresses 11 Pottery 10 Collection and preservation 9 Indians 9 Stone age 9 Catalogs 8 Petroglyphs 8 Anthropology 7 Bronze age 7