Human poisoning from native and cultivated plants - Duke University Press. (Duke University Press, 1974)

Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1887)

Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1890)

Hymenoptera of America north of Mexico : synoptic catalog - Krombein, Karl V. (U.S. Dept. of Agriculture, 1951)

Hymenoptera of America north of Mexico : synoptic catalog, second supplement - Krombein, Karl V. (U.S. Dept. of Agriculture, 1967)

Icones fungorum omnium hucusque cognitorum ad usum sylloges Saccardianae adcommodatae - Berlese, A. N. (Augusto Napoleone), 1864 -1903 (Sumptibus auctoris, Typis Eduardi Pergola, 1894)

Icones stirpium, seu, Plantarum tam exoticarum, quam indigenarum :in gratiam rei herbariae studiosorum in duas partes digestae : cum septem linguarum indicibus, ad diuersarum nationum vsum - Moretus, Jan 1543 -1610 (Ex officina plantiniana :Apud Viduam et Ioannem Moretum, 1591)

Iconographia floræ italicæ : ossia, Flora italiana illustrata ... - Crépin, François, 1830 -1903 (Tip. del seminario, 1895)

Iconographic encyclopaedia of science, literature, and art - Baird, Spencer Fullerton, 1823 -1887 (R. Garrigue, 1851)

Iconum botanicarum index locupletissimus = Die Abbildungen sichtbar blühender Pflanzen und Farnkräuter : aus der botanischen und Gartenliteratur des XVIII. und XIX. Jahrhunderts in alphabetischer Folge zusammengestellt - Pritzel, G. A. (Georg August), 1815 -1874 (In Libraria F. Nicolai, 1855)

Iconum botanicarum index locupletissimus. Verzeichniss der Abbildungen sichtbar blühender Pflanzen und Farnkräuter aus der botanischen und Gartenliteratur des XVIII. und XIX. Jahrhunderts in alphabetischer Folge zusammengestellt - Pritzel, G. A. (Georg August), 1815 -1874 (Nicolaische Verlagsbuchh, 1866)

Identification of plants with fleshy fruits - New York State Museum. (University of the State of New York, State Education Dept, 1990)

Identification of the economic woods of the United States; including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (Wiley, 1919)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (J. Wiley & Sons, 1919)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (John Wiley & sons, inc.; [etc., etc.], 1919)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (John Wiley & sons, inc.; [etc., etc. ], 1919)

The identification of trees & shrubs; how to recognize, without previous knowledge of botany, wild or garden trees and shrubs native to the north temperate zone - Makins, F. K. (Dutton, 1937)

I.E. Ilgenfritz' Sons Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1923)

I.E. Ilgenfritz' Sons Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1924)

I.E. Ilgenfritz' Sons Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1925)

Les îles Canaries. Flore de l'archipel - Proust, Louis, 1878 -1959 (P. Klincksieck, 1908)

Ilgenfritz Monroe Nursery : No. 96 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1942)

Ilgenfritz Monroe Nursery : No. 97 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1943)

Ilgenfritz Monroe Nursery : No. 98A - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1945)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1944)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1946)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1949)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1950)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1951)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1952)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1953)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1954)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1955)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1956)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1957)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1959)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1960)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1914)

Illinois birds, Picidae - Graber, Jean W. (Jean Weber), 1924 -2015 (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1977)

The Illinois Natural History Survey reports - Illinois. Natural History Survey Division (Natural History Survey, Illinois Institute of Natural Resources, 1986)

The "Illinois way" of beautifying the farm - Miller, Wilhelm, 1869 - (University of Illinois Agricultural Experiment Station, 1914)

Illustrated and descriptive catalogue of fruit and ornamental trees : shrubs, roses, grape vines, small fruits, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (First National Nurseries, 1909)

Illustrated and descriptive catalogue of fruit and ornamental trees : roses grape vines shrubs small fruits plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Nursery Co, 1910)

Illustrated and descriptive catalogue of fruit and ornamental trees : roses grape vines shrubs small fruits plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Nursery Co, 1912)

Illustrated and descriptive catalogue of ornamental trees, shrubs, roses, grape vines, small fruits, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (First National Nurseries, 1917)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreen trees : shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1910)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreen trees : shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1913)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreen trees shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1915)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreen trees shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1917)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreens : trees, shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1918)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreen trees : shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1919)

Illustrated and descriptive catalogue of the finest kinds of deciduous and evergreens : trees, shrubs, roses, vines, herbaceous plants, fruit trees, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase Brothers Company, 1920)

The illustrated botany : comprising the most valuable native and exotic plants, with their history, medicinal properties, etc. : to which is added an introduction on physiology, and a view of the natural and Linnæan systems - Comstock, J. L. (John Lee), 1789 -1858 (J.K. Wellman, 1847)

An illustrated catalogue of American insect galls - Felt, Ephraim Porter, 1868 -1943 (1915)

Illustrated catalogue : spring of 1894 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John R. & A. Murdoch, 1894)

Illustrated descriptive catalogue of ornamental trees, shrubs, and climbing vines offered by the Reading Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reading Nursery, 1890)

Illustrated descriptive catalogue of ornamental trees, shrubs, roses, flowering plants, bulbs, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frost & Co, 1875)

The illustrated dictionary of gardening :a practical and scientific encyclopædia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L.U. Gill, 1884)

The Illustrated dictionary of gardening : a practical and scientific encyclopaedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. Upcott Gill, 1887)

The illustrated dictionary of gardening, a practical and scientific encyclopedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. U. Gill, 1884)

An illustrated encyclopaedia of gardening - Wright, Walter P. (Walter Page), 1864 -1940 (J. M. Dent & sons, ltd, 1911)