Series 3: Manuscripts & Typescripts, 1949, undated

There are seven categories of material based on localities of botanical research: (a) Botany of Puerto Rico; (b) Britton & Brown Illustrated Flora; (c) Catalogue of the Flora of Cuba; (d) Flora of Northern South America; (e) Flora of Jamaica, and (f) Flora Borinquena. The last category (g) Notes on Polygala, is a genus study. Contents include annotated and edited typescripts, manuscript notes, and information on related work by other authors.