| Oak Hill Cemetery in Washington, D.C. |
3 |
| Oklahoma City, Oklahoma |
22 |
| Olympia Washington |
7 |
| Pershing Park in Washington, D.C. |
3 |
| Philadelphia, PA |
10 |
| Philadelphia, Pennsylvania |
103 |
| Philadephia, Pennsylvania |
12 |
| Place Jean-Paul Riopelle in Montreal, Quebec, Canada |
2 |
| place) |
1 |
| prayer): Statue inside the National Cathedral in Washington, D.C. |
2 |
| Prince George's County Maryland |
2 |
| Prince George's County Maryland near Washington, D.C. |
1 |
| Prince Georges County Maryland |
3 |
| Prince Georges County, Maryland near Washington, D.C. |
1 |
| Punxsutawney Pennsylvania |
1 |
| Reston, Virginia near Washington, D.C. |
1 |
| Richmond, Virginia |
3 |
| Rincon Park on the Embarcadero in San Francisco, California |
1 |
| Rock Creek Cemetery in Washington, D.C. |
6 |
| Rock Creek Park |
1 |