| title | creator | language | description | tableOfContents | contributor | subject | created |
| The Kitchen Encyclopedia
Twelfth Edition (Swift & Company) | Anonymous | en | | | | | 2010-09-17 |
| Northern Nut Growers Association Report of the Proceedings at the Twelfth Annual Meeting
Lancaster, Pennsylvania, October 6 and 7, 1921 | | en | | | Northern Nut Growers Association [Editor] | Nuts -- Periodicals; Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals | 2006-11-06 |
| Reminiscences of service with the Twelfth Rhode Island Volunteers, and a memorial of Col. George H. Browne | Tillinghast, Pardon E. | en | | | | | 2010-09-13 |
| Mediæval Wales
Chiefly in the Twelfth and Thirteenth Centuries: Six Popular Lectures | Little, A. G. (Andrew George), 1863-1945 | en | | | | Wales -- History; Monasteries -- Wales; Geoffrey, of Monmouth, Bishop of St. Asaph, 1100?-1154; Giraldus, Cambrensis, 1146?-1223? | 2008-03-29 |
| The White Ladies of Worcester
A Romance of the Twelfth Century | Barclay, Florence L. (Florence Louisa), 1862-1921 | en | | | | | 2005-07-27 |
| A Jacobite Exile
Being the Adventures of a Young Englishman in the Service of Charles the Twelfth of Sweden | Henty, G. A. (George Alfred), 1832-1902 | en | | | | | 2006-05-08 |
| The Twelfth Hour | Leverson, Ada, 1862-1933 | en | | | | | 2008-12-17 |