| Educator Supplement | X |
 |
|
| Photo Essay | X | ||
| Background Information | X | ||
| Habitat Slides (all sites) | X | ||
| Aerial Photography | 1959 | 1972 | 2004 2000 Washington DC |
| Satellite Images | Landsat VII Thematic Mapper | ||
| 1996
Natural Color
Thermal Color Infrared Black/White |
|||
| Habitat Maps | 1959 | 1972 | 2004 |
| Topographic Maps |
1:24,000 Washington
DC 1:24,000 |
1:100,000 | 1:250,000 |
| Land Cover Maps | 1959 | 1972 | 2004 |