| Educator Supplement | X |
 |
|||||
| Photo Essay | X | ||||||
| Background Information | X | ||||||
| Habitat Slides (all sites) | X | ||||||
| Aerial Photography | |||||||
| Satellite Imagery | 1993 | ||||||
| Habitat Maps | 1958 | 1985 | 1998 | ||||
| Topographic Maps |
1:24,000 1:24,000 St. Louis |
1:100,000 | 1:250,000 | ||||
| Land Cover Maps | 1958 | 1989 | 1998 | ||||