Subjects
- Radar.1
- Radioisotopes.1
- Railroad employees.1
- Railroad facilities.1
- Railroad locomotives.1
- Railroad stations.1
- Real property -- Michigan -- Detroit -- Maps.1
- Real property -- Michigan -- Maps.1
- Real property -- Ontario -- Windsor -- Maps.1
- Recreation -- Michigan -- Iosco County.1
- Refugees -- Michigan.1
- Resorts -- Michigan -- Iosco County.1
- Resorts -- Michigan.1
- Retirement.1
- Riots -- Michigan -- Detroit -- History -- 20th century.1
- Riots.1
- Rites and ceremonies.1
- Roads -- 1901-1910.1
- Roads -- Michigan -- Northport.1
- Roads -- Michigan -- Upper Peninsula.1