| Educator Supplement | X |
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| Photo Essay | X | |||
| Background Information | X | |||
| Background Slides | X | |||
| Habitat Slides (all sites) | X | |||
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| Aerial Photography | 1977 | 1981 | 2000 2000 Portland |
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| Habitat Maps | 1977 | 1981 | 2000 | |
| Topographic Maps | 1:24,000 1:24,000 Portland |
1:100,000 | 1:250,000 | |
| Land Cover Maps | 1977 | 1981 | 2000 | |
| Satellite Imagery | X C.I. X N.C. X B.W. | |||
| Historical Maps | 1806 | |||