The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1951)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1955)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1957)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1959)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1971)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1974)

The Green thumb - Denver Botanic Gardens. (Colorado Forestry and Horticulture Association, 1987)

Green thumb newsletter - Denver Botanic Gardens. (Denver Botanic Gardens, 1973)

Green thumb newsletter - Denver Botanic Gardens. (Denver Botanic Gardens, 1975)

The green thumbook - Schroeder, Marion. (Valley Crafts, 1956)

Greenhouse gossip. Vol. 1, No. 6, August 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fight Floral Co., Inc, 1942)

The greenhouse, hot house, and stove - McIntosh, Charles, 1794 -1864 (W. S. Orr and co, 1838)

Greenhouse management for amateurs - May, William J. (Gill)

Greenlands grows iris, narcissus, roses, hemerocallis, native plants : also plants for rockery & border - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greenlands, 1935)

Greetings from Tulipdom - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1942)

Greetings from "Tulipdom" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1957)

Greetings from Tulipdom - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1937)

Greetings from "Tulipdom", 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1932)

Greetings from "Tulipdom", 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1933)

Greetings from "Tulipdom", 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1934)

Greetings from "Tulipdom", 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1935)

Greetings from Tulipdom, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1936)

Greetings from "Tulipdom", 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1938)

Greetings from "Tulipdom", 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1939)

Greetings from "Tulipdom", 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Bros, 1941)

Greetings from Tulipdom, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1946)

Greetings from Tulipdom, 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1947)

Greetings from "Tulipdom", 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1948)

Greetings from "Tulipdom", 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1951)

Greetings from "Tulipdom", 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1952)

Greetings from "Tulipdom", 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1953)

Greetings from "Tulipdom", 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1954)

Greetings from "Tulipdom", 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Zandbergen Brothers, 1955)

Die Grossschmetterlinge der Erde : eine systematische Bearbeitung der bis jetzt bekannten Grossschmetterlinge - Seitz, Adalbert, 1860 -1938 (Verlag des Seitzschen Werkes (Alfred Kernen), 1914)

Grow your spring bouquets! plant imported Dutch bulbs! : absolutely guaranteed by Gardener's Green - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, Inc, 1955)

Growers of internationally famous varieties of daffodils, miniature daffodils, Dutch iris, lilies, hyacinths, tulips and miscellaneous bulbs, 1946–47 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oregon Bulb Farms, 1946)

Growers of internationally famous varieties of daffodils, miniature daffodils, Dutch iris, lilies, hyacinths, tulips and miscellaneous bulbs, 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oregon Bulb Farms, 1947)

Growth hormones in plants. Authorized English translation of Die wuchsstofftheorie und ihre bedeutung für die analyse des wachstums und der wachstumsbewegungen der pflanzen - Avery, George S. (George Sherman), 1903 -1994 (McGraw-Hill Book Company, inc, 1936)

Grundzüge der Pflanzenverbreitung auf der iberischen Halbinsel - Willkomm, Moritz, 1821 -1895 (W. Engelmann, 1896)

Grundzüge der pflanzenverbreitung auf der Iberischen halbinsel - Willkomm, Moritz, 1821 -1895 (W. Engelmann, 1896)

Grundzüge der Pflanzenverbreitung in den Karpathen - Pax, Ferdinand, 1858 -1942 (W. Engelmann, 1898)

Grundzüge der Pflanzenverbreitung in den Kaukasusländern von der unteren Wolga über den Manytsch-Scheider bis zur Scheitelfläche Hocharmeniens - Radde, Gustav, 1831 -1903 (W. Engelmann, 1899)

Grundzüge der Systematik und speciellen Pflanzenmorphologie - Goebel, K. (Karl), 1855 -1932 (Engelmann, 1882)

Guide du botaniste dans le canton de Vaud : comprenant en outre le bassin de Genève et le cours inférieur du Rhone en Valais - Rapin, D. (Daniel), 1799 -1882 (J. Cherbuliez, 1862)

Le guide du botaniste herborisant : conseils sur la récolte des plantes, la préparation des herbiers, l'exploration des stations de plantes phanérogames et cryptogames et les herborisations ... - Verlot, Bernard, 1836 -1897 (J. B. Baillière, 1865)

A guide to better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1938)

A guide to better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1937)

Guide to the spring flowers of Minnesota, field and garden - Clements, Frederic E. (Frederic Edward), 1874 -1945 (University of Minnesota, 1913)

A guide to the wild flowers east of the Mississippi and north of Virginia - Taylor, Norman, 1883 -1967 (Greenberg, 1928)

Guldemond's bulbs, fall 1951 : bulbs, seeds, plants, supplies : everything connected with horticulture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Guldemond's, 1951)

Gurney fall catalog for 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gurney Seed and Nursery Co, 1955)

Gurney's catalog for fall of 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gurney Seed and Nursery Co, 1951)

Gurney's catalog for fall of 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gurney Seed and Nursery Co, 1952)

Gurney's catalog for fall of 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gurney Seed and Nursery Co, 1953)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1895)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1904)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1912)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1909)

Haandbog i den danske flora - Lange, Johan, 1818 -1898 (C.A. Reitzel, 1851)

Haandbog i den danske flora - Lange, Johan, 1818 -1898 (C.A. Reitzels forlag, 1856)

Haandbog i den danske flora - Lange, Johan, 1818 -1898 (C.A. Reitzels forlag, 1864)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds, cut flowers : spring and fall 1956, 41st year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1956)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds or cut flowers : spring and fall 1938, 23rd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1938)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds or cut flowers : spring and fall 1937, 22nd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1937)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds or cut flowers : spring and fall 1936, 21st year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1936)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds or cut flowers : spring and fall 1955, 40th year : for the rockery, home grounds, cut flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1955)

Hallauer's hardy herbaceous and alpine plants, dwarf shrubs and bulbs for the rockery, home grounds or cut flowers : fall 1933-spring 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.A. Hallauer, 1933)

Hallawell's bulbs, fall 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1937)

Hallawell's bulbs, fall 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1938)

Hallawell's fall catalog of bulbs : 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, 1914)

Hallawell's fall catalog of bulbs : 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Hallawell Seed Company], 1915)

Hallawell's fall catalog of bulbs : 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, 1916)

Hallawell's fall catalog of bulbs : 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, 1918)

Hallawell's fall catalog of bulbs : 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Hallawell Seed Company], 1923)

Hallawell's fall catalog of bulbs : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Hallawell Seed Company], 1924)

Hallawell's fall catalog of bulbs : 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Hallawell Seed Company], 1925)

Hallawell's fall catalog of bulbs : 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1926)

Hallawell's fall catalog of bulbs : 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1929)

Hallawell's fall catalog of bulbs : 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1930)

Hallawell's fall catalog of bulbs : 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1931)

Hallawell's fall catalog of bulbs : 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1934)

Hallawell's fall catalog of bulbs : 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Inc, 1936)

Hallawell's fall catalogue of bulbs : 1912 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, Incorporated, 1912)

Hallawell Seed Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Co, 1958)

Hallawell Seed Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Company, 1959)

Hallawell Seed Co. : seeds, bulbs, plants, trees, garden accessories, fertilizers, insecticides - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hallawell Seed Co, 1957)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1859)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1868)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1870)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1871)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1878)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1879)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1880)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1882)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1883)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1884)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1885)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1888)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1889)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1890)

Hand-list of bulbs and tubers : July, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hocker Edge Gardens, 1936)

Hand-list of herbaceous plants cultivated in the Royal Botanic Gardens (Printed for H. M. Stationery Off. by Darling, 1902)

Handbok i Skandinaviens flora : innefattande sveriges och norges växter, till och med mossorna - Hartman, Carl Johan, 1790 -1849 (Z. Haeggström, 1864)

Handbook of flower pollination : based upon Hermann Müller's work ʻThe fertilisation of flowers by insectsʼ - Knuth, Paul, 1854 -1899 (Clarendon Press, 1906)

Handbook of flower pollination based upon Hermann Müller's work 'The fertilisation of flowers by insects' - Knuth, Paul, 1854 -1899 (Clarendon Press, 1906)