Subjects
- Radar.1
- Radioisotopes.1
- Real property -- Michigan -- Detroit -- Maps.1
- Real property -- Michigan -- Maps.1
- Real property -- Ontario -- Windsor -- Maps.1
- Recreation.1
- Refugees -- Michigan.1
- Retirement.1
- Riots -- Michigan -- Detroit -- History -- 20th century.1
- Riots.1
- Rockets.1
- Safety.1
- Sailboats.1
- Sailing.1
- Salt mining -- Michigan.1
- Schools -- Michigan.1
- Sculpture -- Michigan -- Detroit.1
- Seasons.1
- Shopping centers.1
- Signal towers.1