This collection contains Linda Lear's research materials gathered for her biography Rachel Carson: Witness for Nature. It also contains published works by and about Carson.

The Roland C. Clement collection documents the professional, military and academic career of American environmentalist, Roland C. Clement. Types of materials in the collection include: correspondence, writings and speeches, memorandum, minutes, reports, photographs, notebooks, clippings and other manuscripts relating to his professional and academic experience.

This collection contains case studies, clippings, conference materials, correspondence, notes, photographs, presentations, publications, reports, and research documenting the life and work of ecologist William A. Niering.