Trumbull & Beebe's catalogue, 1902 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Trumbull & Beebe, 1902)

Tuinbouw-flora van Nederland en zijne overzeesche bezittingen - Vriese, W. H. de (Willem Hendrik), 1806 -1862 (A. W. Sythoff, 1855)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 1998)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 1999)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 2003)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 2004)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 2007)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 2010)

The turk's cap - Delaware Native Plant Society. (Delaware Native Plant Society, 2014)

Turkey Creek Nurseries : 1907-08 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barber-Frink Company, 1908)

Tuttle Bros. Nurseries, 1942 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1942)

Tuttle Bros. Nurseries, 1943 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1943)

Tuttle Bros. Nurseries, 1944 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1944)

Tuttle Bros. Nurseries, 1946 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1946)

Tuttle Bros. Nurseries, 1947 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1947)

Tuttle Bros. Nurseries, 1948 : growers of the best in nursery stock since 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1948)

Tuttle Bros. Nurseries, Pasadena, California : 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1941)

Twelve ornamental shrubs to flood your garden with beauty - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Monrovia Nursery Company, 1952)

Über Juliania, eine Terebinthaceen-Gattung mit Cupula, und die wahren Stammeltern der Kätzchenblütler. Neue Beiträge zur Stammesgeschichte der Dicotyledonen - Hallier, Hans, 1868 -1932 (Heinrich, 1908)

Union County Nurseries : wholesale list, spring, 1904 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hiram T. Jones, 1904)

United States National Arboretum contribution - National Arboretum (U.S.) (The Service, 1992)

United States National Arboretum contribution - National Arboretum (U.S.) (The Service, 1994)

The Universal herbal; or, Botanical, medical, and agricultural dictionary; containing an account of all the known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied, whether as food, as medicine, or in the arts and manufactures, with the best methods of propagation, and the most recent agricultural improvements ... - Green, Thomas. (Caxton Press, 1824)

The universal herbal : or botanical, medical and agricultural dictionary : containing an account of all known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied - Green, Thomas. (Printed at the Caxton Press by H. Fisher, 1816)

The University of Colorado studies General series A - University of Colorado, Boulder. (University of Colorado, 1905)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1954)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1957)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1958)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1959)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1960)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1961)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1962)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1963)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1964)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1965)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1966)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1968)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1972)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1973)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1974)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1975)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1978)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1980)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1981)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1985)

Unsere Freiland-Laubgehölze, Anzucht, Pflege und Verwendung aller bekannten in Mitteleuropa im freien kulturfähigen Laubgehölze, unter Mitwirkung von István Graf Ambrózy-Migazzi, Georg Arends, C. Heicke, Herm. A. Hesse, P. Kache, Wilhelm Kesselring, A. Purpus, Alfred, Rehder, Prof. Schwappach, Fritz Graf Schwerin, Hellmut Spaeth, Egbert Wolf und Franz Zeman. Hrsg. von Ernst Graf Silva Tarouca und Camillo Schneider - Schneider, Camillo, 1876 -1951 (Hölder-Pichler-Tempsky A.G.; [etc.], 1922)

Untersuchungen über die assimilation der kohlensäure - Willstätter, Richard, 1872 -1942 (J. Springer, 1918)

Untersuchungen über die Einwirkung schwefliger Säure auf die Pflanzen - Wieler, A. (Arwed), 1858 - (Gebrüder Borntraeger, 1905)

Useful and ornamental planting : with an index - Society for the Diffusion of Useful Knowledge (Great Britain) (Baldwin and Cradock, 1832)

Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds - Massachusetts. State Board of Agriculture. (1913)

Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds - Massachusetts. State Board of Agriculture. (1907)

Useful wild plants of the United States and Canada - Saunders, Charles Francis, 1859 -1941 (R.M. McBride, 1920)

Useful wild plants of the United States and Canada - Saunders, Charles Francis, 1859 -1941 (R. M. McBride & company, 1920)