Lease and rental services Public lands 142 Public buildings 113 Land tenure 105 Indians of North America 94 Budget 71 Property 43 Expenditures, Public 40 Government property 40 Oil and gas leases 34 Coal mines and mining 29 Law and legislation 29 Military bases 26 Barracks 25 Federal aid to housing 25 Postal service 25 Indian reservations 24 Public contracts 24 Land use 22 Railroads 22 Mines and mineral resources 20 Seneca Indians 20 Airports 19 Tobacco industry 19 National parks and reserves 17 Housing 16 Claims 15 Revenue 15 School facilities 14 Armies 12