Field books are important primary source materials for biodiversity research. Their pages are the first to document the thoughts, observations, musings, and raw data generated or gathered by a scientist while in the field. They are the foundation upon which published natural history literature is based. The Field Book Project (FBP) is working to improve access to field books in the Smithsonian’s collections. Digitized versions of these field books are made available in the Biodiversity Heritage Library (BHL). There are currently over 500 field books from FBP in BHL. One of these field books was written by Joshua F. B (Fry Bullitt) Camblos (1916-2012).