[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1898)

[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, 1909)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1910)

[H. Cannell & Sons materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (H. Cannell & Sons, 1911)

[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, 1914)

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

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

Hamburger Garten- und Blumenzeitung (R. Kittler, 1881)

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

Hamburger Garten- und Blumenzeitung (R. Kittler, 1886)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1887)

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

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

Hampel's Gartenbuch für Jedermann : Anleitung zur praktischen Ausübung aller Zweige der Gärtnerei : aus der Praxis für die Praxis : mit 198 in den Text gedruckten Abbildungen - Kunert, Fritz, 1863 -1948 (Verlagsbuchhandlung Paul Parey, 1902)

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)

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)

Handbook of flower pollination based upon Hermann Müller's work 'The fertilisation of flowers by insects' - 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, 1909)

Handbook of the wild and cultivated flowering plants, by Chester Arthur Darling... - Darling, Chester Arthur. (The Mason-Henry press, 1912)

Handbook of trees, shrubs, roses, plants for garden and greenhouse : 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (A.N. Pierson Inc, 1916)

Handbuch der Blütenbiologie, unter Zugrundelegung von Herman Müllers Werk: "Die Befruchtung der Blumen durch Insekten." - Knuth, Paul, 1854 -1899 (W. Engelmann, 1898)

Handbuch für botanische Bestimmungsübungen - Niedenzu, Franz, 1857 -1937 (Engelmann, 1895)

Handwörterbuch der naturwissenschaften - Verworn, Max, 1863 -1921 (G. Fischer, 1912)

The happy garden - Ansell, Mary. (Cassell & co., ltd, 1912)

Hardy ferns, wild flowers, rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1941)

The hardy flower book - Harvey, Frederick W., (Offices of Country life, ltd. [etc.], 1914)

Hardy flowers from seed : grow your own ; New and rare flowers for 1926 ; The Rock garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Max Schling, Inc, 1926)

Hardy herbaceous & Alpine plants : autumn 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1928)

Hardy herbaceous & Alpine plants : fall 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1930)

Hardy herbaceous & Alpine plants : Spring 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1927)

Hardy herbaceous & Alpine plants : spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1928)

Hardy herbaceous & Alpine plants : spring 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1929)

Hardy herbaceous & Alpine plants : wholesale catalog, autumn 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1928)

Hardy herbaceous & Alpine plants : wholesale catalog, autumn 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1929)

Hardy herbaceous & Alpine plants : wholesale catalog, Autumn 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1927)

Hardy herbaceous & Alpine plants : wholesale catalog, fall 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1930)

Hardy herbaceous & Alpine plants : wholesale catalog, Spring 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1927)

Hardy herbaceous & Alpine plants : wholesale catalog, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1930)

Hardy herbaceous & Alpine plants : wholesale catalog, Spring 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1929)

Hardy herbaceous & Alpine plants : wholesale catalog, Spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1928)

Hardy herbaceous and alpine plants : spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1931)

Hardy herbaceous and alpine plants : wholesale catalog, spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1931)

Hardy herbaceous perennials, alpine and rock plants, hardy florists' flowers, bog and water plants - James Veitch & Sons. (James Veitch & Sons, Ltd, 1913)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1932)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1931)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1929)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1930)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Firm, 1926)

Hardy ornamentals : trees, plants bulbs ferns shrubs, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1899)

Hardy ornamentals trees plants bulbs shrubs ferns vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Horsford, 1900)

Hardy perennial plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1917)

Hardy perennial plants from all over the world. Fall 1919 spring 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1919)

Hardy perennial plants from all over the world : Dutch bulbs, and natives of California, ferns, lilies, rock plants, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1918)

Hardy perennial plants : season 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Perennial Gardens, 1959)

Hardy perennials - Macself, A. J. (Albert James), 1878 -1952 (Charles Scribner's Sons, 1922)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, spring 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1957)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, fall 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1956)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, spring 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1958)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, fall 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1957)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, season 1955-56 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1955)

Hardy perennials over 600 varieties and hardy boxwood : wholesale tradelist, spring 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weller Nurseries Company, Inc, 1956)

Hardy plants : a complete collection : 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank Josifko, 1926)

Hardy plants : a complete collection : 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank Josifko, 1927)

Hardy plants by Wayside Gardens : root strength, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1934)

Hardy plants for cold weather : supplement for 1910 Horsford's autumn - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1910)

Hardy plants for cottage gardens - Albee, Helen Rickey, 1864 -1939 (H. Holt and company, 1910)

Hardy plants from a hardy climate : Horsford's autumn supplement for 1902 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred'k H. Horsford, 1902)

Hardy plants, rock plants, lilies, bulbs : 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1933)

Hardy plants, rock plants, lilies, bulbs : Autumn, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1932)

Hardy plants, rock plants, lilies, bulbs : autumn 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1934)

Hardy plants, rock plants, lilies, bulbs : spring, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1932)

Hardy plants, rock plants, lilies, bulbs : wholesale catalog, autumn 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1933)

Hardy plants, rock plants, lilies, bulbs : wholesale catalog, autumn 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1934)

Hardy plants, rock plants, lilies, bulbs : wholesale, fall 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1931)

Hardy plants : root strength, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1935)

Hardy plants : root strength, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1936)

Hardy plants, root strength, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1937)

Hardy plants, root strength, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1938)

Hardy plants, roses, shrubs, bulbs : wholesale catalog, fall 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1956)

Hardy rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hav'alook Gardens, 1935)

Hardy trees, shrubs & plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Capital City Nurseries, 1921)

Hardy trees, shrubs & plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Capital City Nurseries, 1920)

Hardy trees, shrubs & plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Capital City Nurseries, 1922)

Hardy trees, shrubs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Roehrs Company, 1919)

Hardy trees, shrubs, vines, roses, plants and their uses : spring 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries Co, 1914)

Harris seeds, 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph Harris Company, Inc, 1945)

Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1913)

Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1914)

Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1915)

Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1921)

The "Heatherhome" book of bulbs. for import orders exclusively and the hardy garden from seed. 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Knight and Struck Company, 1917)

The "heatherhome" bulb book : fall 1916 for import orders exclusively - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Knight and Struck Company, 1916)

Hedwigia (Verlag und Druck von C. Heinrich, 1898)

Henderson's autumn catalogue : 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1905)

The herbaceous garden - Martineau, Alice Vaughan-Williams. (Williams & Norgate, 1913)

Herbaceous perennial and rock garden plants, climbing vines and garden supplies [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westcroft Gardens, 1930)

Herbaceous perennial and rock plants, choice landscape materials, climbing vines, garden supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westcroft Gardens, 1933)