Railroad stations 3 Airports 2 Banks 2 Church buildings 2 City & town halls 2 Monuments & memorials 2 Police 2 more ... Public buildings 2 Air mail service 1 Airplane equipment 1 Airplanes 1 Amusement parks 1 Amusement rides 1 Armories 1 Beaches 1 Bus terminals 1 Business panics 1 Capitols 1 Capture & imprisonment 1 Courthouses 1 Demonstrations 1 Escapes 1 Farmers' groups 1 Festive decorations 1 Holidays 1 Hospitals 1 Military camps 1 Parades & processions 1 Pickets 1 Piers & wharves 1 Political parades & rallies 1 Political parties 1 Prison riots 1 Radiophones 1 Riot control 1 Roller coasters 1 Schools 1 Socialism 1 Swimming pools 1 Taxation 1 less ...