Each of these has been confirmed live and freely readable at the linked source as of the date below. They’re queued in our ingest pipeline and will become searchable inside the app as embedding completes. We don’t add anything we couldn’t open ourselves — if a title we wanted isn’t here, it usually means we couldn’t find a clean PD scan.
Nathaniel L. Britton & Addison Brown · 1913 · Internet Archive
The definitive turn-of-the-century illustrated flora for the northern U.S. and Canada, with line drawings and keys for nearly every vascular species. Foundational for any plant-by-plant identification work on northern North America.
Vol. 2 ·
Vol. 3
U.S. Department of Agriculture · 1911 · Internet Archive
A federal-government work covering useful and ornamental plants, with extensive sections on wild food crops, native fibers, and ornamentals that escaped cultivation. PD by virtue of federal authorship; an underrated source of grounded agronomic detail.
Finley Ellingwood · 1919 · Internet Archive
The capstone eclectic-medicine reference of the early 20th century, organizing hundreds of plant remedies by therapeutic indication. We use Ellingwood to surface what 19th-century American physicians actually prescribed before pharmaceutical chemistry displaced botanical medicine.
Harvey W. Felter & John U. Lloyd · 1898 · Henriette’s Herbal
Often called the most thorough materia medica of American eclectic medicine, with per-plant entries on origin, preparation, dose, and therapeutic use. The 1898 source text is unambiguously PD-US; only Henriette Kress’s editorial commentary on her site is not, and we treat that line carefully during ingest.
Harvey W. Felter · 1922 · Henriette’s Herbal
Felter’s solo-authored synthesis of eclectic plant medicine, written near the close of the movement. Tighter and more clinically organized than King’s. Same PD-care note as King’s applies: we ingest only the historic Felter text, not modern editorial overlay.
George B. Wood & Franklin Bache · 1834 ed. · Internet Archive
The standard American pharmacy reference for most of the 19th century. The 1834 edition catalogs every plant-derived medicine recognized in U.S. practice at the time, with botanical descriptions and preparation procedures. A primary witness for what counted as “medicine” in pre-Civil-War America.
Jacob Bigelow · 1817–1820 · Internet Archive
Bigelow’s pioneering three-volume work on native U.S. medicinal plants, the first major American botanical text to combine description, color plate, and therapeutic discussion. The reference point for everything that followed in 19th-century U.S. plant medicine.
William P. C. Barton · 1817–1818 · Internet Archive
A close contemporary of Bigelow’s work, with its own set of detailed plant entries and observations. Cross-reading Barton against Bigelow reveals how early-19th-century American botanists differed on the medicinal claims of the same species.
Constantine S. Rafinesque · 1828 · Internet Archive
Rafinesque’s eccentric, frequently brilliant two-volume catalog of U.S. medical plants. Worth ingesting both for his serious botanical observations and for the running argument he picks with contemporaries — revealing for tracing where 19th-century plant-medicine claims actually came from.
Francis P. Porcher · 1863 · Internet Archive
Commissioned by the Confederate government during the wartime blockade, Porcher catalogued every Southern plant that could substitute for imported food, medicine, dye, or fiber. The single most detailed pre-1900 survey of useful plants of the American South.
Lydia Maria Child · 1832 · Internet Archive
A bestseller in its own time, documenting the household uses of wild and cultivated plants by a working New England family of the early 1800s. Strong on preservation, dyeing, and household remedies in plain, practical prose.
John Uri Lloyd · 1884–1887 · Internet Archive
Lloyd’s deeply chemical, deeply historical treatment of North American medicinal plants. Among the best primary sources on the specific extraction and preparation methods used by 19th-century American pharmacists.
Royal College of Physicians of Edinburgh · 1789 ed. · Internet Archive
Late-18th-century pharmacopoeia documenting the European materia medica that early American physicians studied from. Useful for tracing which plant medicines crossed the Atlantic into U.S. practice and which were left behind.
Robert Christison · mid-1800s · Internet Archive
Christison was a foundational figure in 19th-century British toxicology and pharmacy. His commentary covers plant-derived drugs with notes on adulteration, dosage, and known poisonings — an important counterpart to the American eclectic literature.
Wooster Beach · 1833 · Internet Archive
Beach was the founder of the American eclectic-medicine movement. This work lays out the botanical foundations of what would become the Lloyd/Felter/Ellingwood tradition — primary-source reading for understanding how plant medicine was systematized in 19th-century America.
Isabella Beeton · 1861 · Project Gutenberg
The defining Victorian household reference, with extensive sections on cookery, herbalism, food preservation, and home remedies. Cross-cultural counterweight to the American cookery and frugality books on this shelf.
T. F. Thiselton-Dyer · 1889 · Project Gutenberg
An organized survey of European plant folklore — medicinal, ritual, agricultural, and culinary. We use this for the cultural-context layer of plant pages, where the historical “why people did this with the plant” matters as much as the chemistry.
J. H. Maiden · 1889 · Internet Archive
Maiden’s comprehensive catalog of Australian plants and their indigenous and colonial uses — food, fiber, medicine, dye, timber. The non-Northern-Hemisphere anchor on our shelf, and an early reference whenever a question about a plant of Australian or Pacific origin comes up.
John Darby · 1855 · Internet Archive
A structured flora of the American South in two parts: structural botany followed by species descriptions. Useful regional complement to Britton & Brown for plants below the Mason-Dixon line.
Charles Mohr · 1901 · Internet Archive
Mohr’s detailed state-level flora, including a substantial treatment of mosses, ferns, and lower plants alongside vascular species. Valuable both as a regional reference and for its careful attention to the non-vascular plants other early texts skip.