| Educator Supplement | X |
 |
||
| Photo Essay | X | |||
| Background Information | X | |||
| Background Slides | X | |||
| Habitat Slides (all sites) | X | |||
| Aerial Photography | 1974 | 1985 |
1995 1992 Boston |
|
| Satellite Images | Landsat VII Thematic Mapper | |||
| 2002 Natural Color | 2002 Color Infrared | |||
| Habitat Maps | 1974 | 1985 | 1995 | |
| Topographic Maps |
1:24,000 Boston 1:24,000 |
1:100,000 | 1:250,000 | |
| Land Cover Maps | 1974 | 1985 | 1995 | |