Subject
- Shenandoah River Valley (Va. and W. Va.)--Maps1
- Skinks1
- Slugs (Mollusks)2
- South Atlantic States--Maps2
- South Carolina--Maps1
- Southeast Atlantic States--Maps1
- Southern States53
- Spider webs37
- Spiders67
- Squash-bugs3
- Stairs1
- Stinkbugs6
- Stoneflies1
- Striped cucumber beetle1
- Striped daddy longlegs4
- Students53
- Swallowtail butterflies1
- Syrphidae2
- Teachers53
- Thistles10