Papers, notes, articles, and other documents acquired or created by Baldwin in the course of his work. Two particular sections of note in this series are The Blandy Experimental Farm at University of Virginia and the Kingsville Nurseries, now Foxborough Nursery, Inc. These were two organizations he worked closely with to acquire and research new plant specimens.

Includes specimen notes, correspondence, travel documents, and import papers from the work Dr. Baldwin conducted with the United States Department of Agriculture. These materials are national and international in scope, with the bulk of the import documentation originating in Brazil and Liberia.

Reports on botanical field operations. The bulk of the reports are on rivers, river deltas, and regions in Brazil.

Reports, correspondence, travel documentation, and specimen inventories from Dr. Baldwin's trips to Liberia. This subseries includes notes pertaining to his work with strophanthus.

Notes and drafts for Dr. Baldwin's publication "Hevea: A First Interpretation." Hevea brasiliensis, also called the Pará rubber tree, is a natural source of rubber. Dr. Baldwin studied its applications, as well as cultivation methods.

Newspaper articles, documentation, and photos of Dr. Baldwin's work within the Dismal Swamp.The majority of the images are of plant specimens and waterways, with a small series on fish.

Hand-drawn and printed images of chromosomal arrangements for different plant families related to Dr. Baldwin's cytogeographical studies. Some files also contain reference photos of plants.

Notes, records, chromosome diagrams from Dr. Baldwin's research in cytogeography, the study of plant chromosomes.

Correspondence to and from Dr. Baldwin. Arranged alphabetically by last name and chronologically within the folders.

Correspondence to and from Dr. Baldwin by specific individuals. These are arranged alphabetically by last name. This includes letters from William & Mary president, Dr. Julian Alvin Carroll Chandler; the founder of the Virginia Herpetological Society, W. Leslie Burger Jr.; The plant geneticist, member of the Mulford Expedition, and director of Blandy Experimental Farm, Dr Orland Emile White; Alton M. Harvill, Jr., Professor Emeritus of Biology at Longwood University; and Robert F. Hoover who founded the botanical garden and herbarium at California State Polytechnic College.

Correspondence to and from Dr. Baldwin from students he taught at William & Mary. Contains recommendation letters, internship requests, and general correspondence related to his classes.

Correspondence to and from Dr. Speese. Arranged alphabetically by last name.

Materials created by and related to Dr. Speese's work at William & Mary. Subseries contains cytology drawings, notebook and notes from her research, published materials and newspaper articles that are attributed to other creators. The writings contain a selection of poems and short stories with unclear authorship.