Hardy wildflowers, hardy ferns, perennials, rock plants, gladiolus bulbs, garden supplies : 1951 spring, fall 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1951)

Hardy wildflowers, hardy ferns, perennials, rock-plants, gladiolus bulbs, garden supplies : 1957 spring, fall 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1957)

Hardy wildflowers, hardy ferns, perennials, rock-plants, gladiolus bulbs, garden supplies : 1956 spring, fall 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1956)

Hardy wildflowers, hardy ferns, perennials, rock plants, gladiolus bulbs, rose bushes, garden supplies : spring, fall, 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1950)

Hardy wildflowers, hardy ferns, perennials, rock-plants, gladiolus bulbs, garden supplies : 1958 spring, fall 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1958)

Hardy wildflowers, hardy ferns, perennials, rock-plants, gladiolus bulbs, garden supplies : 1955 spring, fall 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1955)

Hardy wildflowers, hardy ferns, perennials, rock plants, gladiolus bulbs, garden supplies : 1954 spring, fall 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1954)

Hardy wildflowers, hardy ferns, perennials, rock plants, gladiolus bulbs, garden supplies : 1952 spring, fall 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1952)

Hardy wildflowers, hardy ferns, perennials, rock plants : spring, fall, 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lounsberry Gardens, 1945)

[Harlan P. Kelsey (Firm) materials] - Harlan P. Kelsey (Firm) (1885)

Harper's guide to wild flowers - Creevey, Caroline A. Stickney, 1843 -1920 (Harper, 1912)

Hartland nature club, Hartland, Vermont - Morgan, Evaline Darling (The Elm tree press, 1923)

Hedwigia (Verlag und Druck von C. Heinrich, 1902)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1890)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & company, 1910)

Herb magic and hardy plants for the home garden, 1943 : herb plants and seeds, native ferns and wild flowers, perennials, rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles of Garry-Nee-Dule, 1943)

Herb magic and hardy plants for the home garden, 1944 : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles of Garry-Nee-Dule, 1944)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles of Garry-nee-Dule, 1949)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Tooles of Garry-nee-Dule, 1948)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles, 1946)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Tooles of Garry-Nee-Dule. (Tooles, 1950)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles, 1947)

Herb magic and Wisconsin ferns, wild flowers : herb plants and seeds, herb products, native ferns and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tooles, 1945)

Herbaceous perennials, rock plants, and hardy vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1927)

Herbaceous perennials, rock plants, and hardy vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1930)

Herbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cheltenham Nurseries, 1937)

Here is our list of wildflowers, ferns, etc. for the 1947-48 season - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Orchid Gardens, 1947)

Hildemere Gardens : perennials for border and rock garden, seedling annuals : cut flowers, garden designing - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1955)

Histoire naturelle des drogues simples : ou Cours d'histoire naturelle professé a l'École supérieure de pharmacie de Paris - Guibourt, N.-J.-B.-G. (Nicolas Jean Baptiste Gaston), 1790 -1867 (J.-B. Baillière et fils, 1876)

Histoire naturelle des drogues simples, ou, Cours d'histoire naturelle professé à l'École de pharmacie de Paris - Guibourt, N.-J.-B.-G. (Nicolas Jean Baptiste Gaston), 1790 -1867 (J. Baillière, 1849)

Home studies in nature - Treat, Mary, 1830 -1923 (Harper & Brothers, 1885)

Horsford's annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1921)

Horsford's annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1922)

Horsford's annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1926)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1952)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1956)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1957)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1953)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1954)

Horsford's annual list for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1955)

Horsford's annual list of perennials and lily bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1958)

Horsford's annual list of perennials and lily bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1959)

Horsford's annual list of perennials and lily bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1960)

Horsford's annual list of perennials and lily bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1961)

Horsford's autumn supplement 1913 : hardy plants for cold climates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1913)

Horsford's autumn supplement 1914 : hardy plants for cold climates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1914)

Horsford's autumn supplement 1915 : cold weather plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1915)

Horsford's autumn supplement, 1917 : cold weather plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1917)

Horsford's autumn supplement for 1904 : hardy plants from a hardy climate - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1904)

Horsford's autumn supplement for 1905 : hardy plants from a hardy climate - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1905)

Horsford's autumn supplement for 1906 : hardy plants from a hardy climate - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1906)

Horsford's autumn supplement for 1907 : hardy plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1907)

Horsford's autumn supplement for 1908 : hardy plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1908)

Horsford's autumn supplement for 1909 : hardy plants for cold climates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1909)

Horsford's autumn supplement for 1911 : hardy plants for cold climates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1911)

Horsford's autumn supplement for 1912 : hardy plants for cold climates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1912)

Horsford's hardy plants and bulbs : a selection of the best truly hardy varieties perennials hardy lilies own root lilacs-evergreens shrubs - woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1945)

Horsford's hardy plants and bulbs : a selection of the best truly hardy varieties perennials hardy lilies own root lilacs-evergreens shrubs woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1951)

Horsford's hardy plants and bulbs : a selection of the best truly hardy varieties perennials hardy lilies own root lilacs-evergreens shrubs - woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1947)

Horsford's hardy plants and bulbs : a selection of the best truly hardy varieties perennials hardy lilies own root lilacs-evergreens shrubs - woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1950)

Horsford's hardy plants and bulbs : a selection of the best truly hardy varieties, perennials, hardy lilies ... : fifty years, 1893-1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1943)

Horsford's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1920)

Horsford's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1901)

Horsford's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1904)

Horsford's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1916)

Horsford's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1912)

Horsford's regal plants and bulbs : a selection of the best, truly-hardy varieties perennials rock plants evergreens shrubs woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1935)

Horsford's regal plants and bulbs : a selection of the best, truly-hardy varieties perennials rock plants hardy lilies evergreens shrubs woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1938)

Horsford's regal plants and bulbs : a selection of the best, truly-hardy varieties perennials rock plants hardy lilies evergreens - shrubs woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1937)

Horsford's regal plants and bulbs : a selection of the best, truly-hardy varieties perennials rock plants hardy lilies evergreens shrubs woodland ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1940)

Horticulture Northwest - Northwest Ornamental Horticultural Society (Northwest Ornamental Horticultural Society, 1986)

House & garden (Condé Nast Publications, etc.], 1910)

How to know the wild flowers; a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (C. Scribner's sons, 1898)

How to know the wild flowers : a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (C. Scribner, 1895)

How to know the wild flowers: a guide to the names, haunts, and habits of our common wild-flowers - Parsons, Frances Theodora, 1861 -1952 (C. Scribner's sons, 1900)

How to know the wild flowers : a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (C. Scribner's sons, 1893)

How to know the wild flowers : a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (Scribner, 1921)

How to know the wild flowers. A guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (C. Scribner's Sons, 1893)

How to know the wild flowers : a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (Charles Scribner's Sons, 1893)

How to know the wild flowers : a guide to the names, haunts, and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (Charles Scribner's Sons, 1913)

How to know the wild flowers : a guide to the names, haunts and habits of our common wild flowers - Parsons, Frances Theodora, 1861 -1952 (Scribner's, 1904)

How to know wild fruits; a guide to plants when not in flower by means of fruit and leaf - Peterson, Maude Gridley, 1871 - (Macmillan, 1905)

How to know wild fruits; a guide to plants when not in flower by means of fruit and leaf - Peterson, Maude Gridley. (Macmillan, 1914)

How to make a country place; an account of the successes and the mistakes of an amateur in thirty-five years of farming, building and development: together with a practical plan for securing a home and an independent income, starting with small capital - Sawyer, Joseph Dillaway. (Orange Judd company; [etc., etc.], 1914)

How to make a country place; an account of the successes and the mistakes of an amateur in thirty-five years of farming, building, and development - Sawyer, Joseph Dillaway. (Orange Judd company; [etc., etc.], 1914)

How to make a flower garden; a manual of practical information and suggestions - Miller, Wilhelm, 1869 - (Doubleday, Page & company, 1903)

How to study plants - Wood, Alphonso, 1810 -1881 (American book company, 1895)

How to study plants : or, Introduction to botany, being an illustrated flora - Wood, Alphonso, 1810 -1881 (Barnes, 1882)

Human poisoning from native and cultivated plants - Duke University Press. (Duke University Press, 1969)

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

The human side of plants - Dixon, Royal, 1885 -1962 (Frederick A. Stokes company, 1914)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1970)

Illinois Natural History Survey bulletin - Illinois. Natural History Survey Division (The Survey, 2007)

Illinois River Bluffs area assessment - Illinois. Dept. of Natural Resources. (Illinois Dept. of Natural Resources, 1998)

Illinois wetland restoration and creation guide - Illinois. Natural History Survey Division (Illinois Natural History Survey, 1997)

Illinois wild flowers - Eifert, Virginia Louise Snider, 1911 -1966 (1960)

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

An illustrated flora of the northern United States, Canada and the British possesions from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102d meridian. Vol. 3, Apocynaceae to Compositae, dogbane to thistle - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner, 1896)

An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner's sons, 1913)

An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner's sons, 1913)

An illustrated flora of the northern United States, Canada and the British possessions from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic ocean westward to the 102d meridian - Britton, Nathaniel Lord, 1859 -1934 (C. Scribner's Sons, 1896)

An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language - Stevens, George T. (George Thomas), 1832 -1921 (Dodd, Mead and company, 1910)

Impacts of backcountry recreation : site management and rehabilitation : an annotated bibliography - Intermountain Forest; Range Experiment Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1981)

Impressions of seedlings - Coulson, John, d.1926. (1899)

Index of organisms and non-parasitic diseases in Plant disease reporter, supplements XXXI-XXXVII, 1924 - United States. Plant Disease Survey. (Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1925)

Index of organisms and non-parasitic diseases in the Plant disease reporter, supplements 105-110, 1938 - United States. Division of Mycology; Disease Survey. (Division of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1939)

Index Rafinesquianus : the plant names published by C. S. Rafinesque with reductions, and a consideration of his methods, objectives, and attainments - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Arnold Arboretum of Harvard University, 1949)

Index to plant chromosome numbers - Missouri Botanical Garden. (Missouri Botanical Garden, 1990)

Indiana University studies - Indiana University (The University, 1921)

The influence of light and darkness upon growth and development - MacDougal, Daniel Trembly, 1865 -1958 (1903)