Claims 2,879 Bills, Private 2,666 Ships 52 Expenditures, Public 19 Patents 17 Officials and employees 16 Inventions 14 more ... Shipwrecks 13 Steamboats 12 Armed Forces 10 History 10 Railroads 10 Taxation 10 Lighthouses 9 Officers 9 Shipowners 9 Warfare 9 Accounting 8 Indians of North America 8 Indians 7 Land tenure 7 Postal service 7 Armored vessels 6 Courts 6 Firearms 6 Public lands 6 Steam-boilers 6 Boats and boating 5 Customs administration 5 Families 5 less ...