Subjects
- Public records.1
- Racquets (Game)1
- Radar.1
- Radioisotopes.1
- Railroads -- Michigan.1
- Refugees -- Michigan.1
- Refuse and refuse disposal.1
- Retirement.1
- Riots -- Michigan -- Detroit -- History -- 20th century.1
- Riots.1
- Roads -- Michigan.1
- Rockets.1
- Safety.1
- Sailboats.1
- Sailing.1
- Salt mining -- Michigan.1
- Sculpture -- Michigan -- Detroit.1
- Seasons.1
- Ships -- Great Lakes.1
- Ships.1