History 3,380 Indians of North America 2,929 Geology 2,536 Politics and government 2,362 Description and travel 2,222 Eskimos 1,697 Environmental aspects 1,384 Mines and mineral resources 1,344 Law and legislation 1,266 Public lands 972 Travel 778 Social life and customs 765 Legal status, laws, etc 699 Gold mines and mining 663 Maps 653 Economic conditions 610 Claims 522 Forest management 500 National parks and reserves 497 Petroleum 489 Antiquities 479 Land use 470 Railroads 464 Fisheries 461 Geology, Stratigraphic 426 Roads 414 Transportation 401 Education 400 Gold discoveries 397 Discovery and exploration 389 Land tenure 387 Missions 387 Frontier and pioneer life 378 Constitutions 371 Management 365 Law 349 Research 347 Petroleum industry and trade 335 Ore deposits 331 Fishes 330 Alaska Natives 324 Natural history 324 Oil and gas leases 322 Hunting 315 Logging 314 Land titles 312 Wilderness areas 312 Manners and customs 305 Registration and transfer 305 Social conditions 305 Ecology 304 Periodicals 304 Oil spills 297 Natural resources 294 Environmental conditions 293 Wildlife refuges 290 Aleuts 284 Forests and forestry 281 Earthquakes 280 Forest reserves 280 Paleontology 270 Tlingit Indians 269 Boundaries 267 By-laws 266 Natural gas 265 World War, 1939-1945 265 Birds 259 Geochemical prospecting 241 Budget 240 Water-supply 237 Wildlife conservation 234 Officials and employees 229 Russians 227 Statistics 227 Inuit 220 Economic aspects 218 Discoveries in geography 215 Glaciers 214 Coal 210 Groundwater 210 Expenditures, Public 209 Geomagnetism 206 Indian land transfers 204 Navigation 204 Sealing 202 Economic history 201 Population 192 Pollution 191 Yupik Eskimos 191 Agriculture 187 Coal mines and mining 181 Geochemistry 178 Harbors 177 Planning 177 Government relations 174 Prospecting 173 Natural gas pipelines 172 Bibliography 167 Housing 167 PRO Schimmel, Caroline F. (donor) (Schimmel Collection copy) 167