Bates College: Ladd Library: The Dorothy Freeman Collection
- Finding aid for a manuscript collection that includes correspondence (1952-1964) between Rachel Carson and her friend Freeman and other material about Carson.
- http://abacus.bates.edu/Library/aboutladd/departments/special/FindingAids/DorthyFreemanFA.shtml

Rachel Carson Papers
- Description of the writer's papers in the collections of Yale University, Beinecke Rare Book and Manuscript Library. Includes biography.
- http://webtext.library.yale.edu/xml2html/beinecke.CARSON.con.html#a8

Connecticut College: Shain Library: The Lear/Carson Collection
- Describes a collection of material related to Carson, donated by her biographer Linda Lear.
- http://www.conncoll.edu/is/info-resources/special-collections/learcarson.htm