Places
- Oakland County (Mich.)1
- Ohio -- Boundaries -- Michigan.1
- Old Mission (Mich.)1
- Old Territorial Road (Mich.)1
- Ontario -- Boundaries -- Michigan.1
- Ontonagon County (Mich.)1
- Orangeville (Mich.)1
- Pennfield (Mich. : Township)1
- Philippines -- History -- 1898-1946.1
- Podunk (Mich.)1
- Poland -- Emigration and immigration.1
- Redford (Detroit, Mich.)1
- Redford (Mich. : Township)1
- Rochester (Mich.)1
- Royal Oak (Mich. : Township)1
- Saginaw County (Mich.)1
- Saginaw River Valley (Mich.)1
- Saint Clair County (Mich.)1
- Saint Joseph River (Mich. and Ind.)1
- Saint Mary's River (Mich. and Ont.)1