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- Palmer Building (Detroit, Michigan)2
- Parking garages1
- Parks4
- Pedestrian malls2
- Peerless Cement Corporation (Detroit, Michigan)2
- People10
- Pharmaceutical industry4
- Picketing12
- Poliomyelitis2
- Pontchartrain Club (Detroit, Michigan)2
- Portable buildings4
- Post offices6
- Pottery industry2
- Produce trade12
- Products5
- Public schools2
- Public utility companies6
- Pylons (Gateways)2