| title | creator | language | description | tableOfContents | contributor | subject | created |
| Grace, Actual and Habitual
A Dogmatic Treatise | Pohle, Joseph, 1852-1922 | en | | | Preuss, Arthur, 1871-1934 [Editor] | | 2009-07-29 |
| Treatise on the Diseases of Women | Pinkham, Lydia Estes, 1819-1883 | en | | | | Women -- Diseases; Women -- Health and hygiene; Patent medicines | 2009-08-05 |
| Treatise on Light | Huygens, Christiaan, 1629-1695 | en | | | | | 2005-01-18 |
| The Commercial Products of the Vegetable Kingdom
Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, | Simmonds, P. L. | en | | | | | 2005-02-27 |
| Roman Farm Management
The Treatises of Cato and Varro | | en | | | Harrison, Fairfax, 1869-1938 [Translator] | | 2004-04-01 |
| Guano
A Treatise of Practical Information for Farmers | Robinson, Solon, 1803-1880 | en | | | | | 2006-12-23 |
| Asparagus, its culture for home use and for market:
a practical treatise on the planting, cultivation,
harvesting, marketing, and preserving of asparagus, with
notes on its history | Hexamer, F. M. | en | | | | | 2010-03-14 |
| Pen Drawing
An Illustrated Treatise | Maginnis, Charles, 1867-1955 | en | | | | | 2006-01-12 |
| A Treatise on the Tactical Use of the Three Arms: Infantry, Artillery, and Cavalry | Lippitt, Francis J. (Francis James), 1812-1902 | en | | | | Tactics; United States -- History -- Civil War, 1861-1865 -- Campaigns | 2008-03-06 |
| Tractus de Hermaphrodites
Or, A Treatise of Hermaphrodites | Jacob, Giles | en | | | | | 2004-10-01 |