Herbaria, Herbarium Specimens and Field Notebooks
- Berlin negatives, digitized photographic images from Berlin Dahlem (specimens later lost in WWII) of herbarium specimens collected in Central and South America from 1778 through May 1930.
- Biodiversity collections index lists specimens held in reference collections around the world.
- Consortium of California herbaria includes many California types.
- Index herbariorum part I, Herbaria of the world (QK75 .I5 1990 Reference). A global directory of public herbaria, associated staff and collections. Location of collector’s collections; important collections at each of the herbaria; points to location of isotypes and dupes; use online edition at NYBG for current staff and email addresses.
- Index herbariorum Part II (1-7) QK96.R4. Vitals on collectors; locations of significant numbers of collections.
- Nationaal Herbarium Nederland virtual herbarium.
- New York Botanical Garden Susan Fraser, “Collector’s field notebooks at the New York Botanical Garden Library” (Brittonia 48:3, July 1996, pp. 308-317)
- “Register of plant collectors’ field notes held in North American institutions” (Stieber, M.T. 1982). Huntia 4(3):151-202.
- SIBIS (South Africa)
- TROPICOS Exsiccatae database is a database of specimens.
- Type specimen register lists specimens in the United States National Herbarium, Smithsonian Institution
- University and Jepson Herbarium field notes (UC), Willis L. Jepson field books (digitized)