Place
- Near top of Konahuanui, Oahu1
- New Haven Gap1
- North Fork of the Little River1
- Nuevo León1
- Ohio1
- Olaa Forest Reserve1
- Old Catalina-El Yunque trail. Sierra de Luquillo1
- On Route 64, 2½ miles NE Highlands1
- On trail to Mt. El Toro1
- Oregon1
- Oriente1
- Panama1
- Panama Canal Zone1
- Peak Mt. El Duque, Sierra de Luquillo1
- Peel Inlet, NW coast of Moresby Island, Queen Charlotte Islands1
- Pigeon River Falls.1
- Ponce1
- Portland1
- Rabbit Creek1
- Rio Juan Diego, Sierra de Luquillo1