The National Library of Medicine has recently digitized and made available the work of Donald Fredrickson (1924-2002), a notable physiologist and biomedical researcher. Visitors are encouraged to begin with the online Exhibit, which includes biographical information and short essays about Dr. Fredrickson's work, as well as a selection of digitized documents and visuals organized by subject. Visitors may locate additional materials compiled in alphabetical or chronological listings, or by using the search engine. New items will become available to the public as the Donald Fredrickson Papers continue to be digitized.