Subject
- Correspondence3
- Diagrams1
- Drafts (documents)1
- Drops1
- Dutch barns1
- Electrostatics2
- Environmentalism1
- Field Notes1
- Formvar1
- Glass plate negatives1
- History of science and technology1
- Hurricane King-- 19471
- Ice1
- Ice nuclei1
- Laboratory Notes1
- Laboratory notebooks1
- Lecture notes1
- Lightning2
- Manuscripts (document genre)2
- Maps2