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 hardy trees, shrubs, and herbaceous plants. Based on the French work of Messrs. Decaisne and Naudin entitled 'Manuel de l'amateur des jardins,' and including the original woodcuts by Riocreux and Leblanc - Decaisne, Joseph, 1807 -1882 (Estes & Lauriat, 1873)

Handbook of plant tolerances to methyl bromide - United States. Animal; Plant Health Inspection Service. Plant Protection; Quarantine Programs. (Dept. of Agriculture, Animal and Plant Health Insp. Serv., Plant Protection and Quar. Programs, 1977)

Handbook of plants - Henderson, Peter, 1822 -1890 (P. Henderson, 1881)

Handbook of plants and general horticulture - Henderson, Peter. (1890)

Handbook of the Amaryllideae, including the Alstroemerieae and Agaveae - Baker, John Gilbert, 1834 -1920 (Bell, 1888)

A handbook of tropical gardening and planting, with special reference to Ceylon - Macmillan, Hugh Fraser. (1914)

The handbook to the flower garden and greenhouse - Glenny, George, 1793 -1874 (W. Kent, 1859)

Handbuch der allgemeinen Botanik - Müller, Nicolaus Jacob Carl, 1843? -1901 (C. Winter's UniversitMatsbuchhandlung, 1880)

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

Handbuch der Pflanzenkrankheiten - Lindau, Gustav, 1866 -1923 (P. Parey, 1908)

Handbuch der praktischen Botanik : enthaltend die Geschichte, Beschreibung und Anwendung sämmtlicher in Deutschland wildwachsenden und in den Gärten und Gewächshäusern cultivierten Pflanzen - Voigt, F. S. (Friedrich Siegmund), 1781 -1850 (F. Mauke, 1850)

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

Handlexikon der Naturwissenschaften und Medizin - Bechhold, H. (Heinrich), 1866 -1937 (Bechhold, 1919)

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, 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 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1927)

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 : Autumn 1926 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1926)

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, Autumn 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1926)

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

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 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1934)

Hardy plants, rock plants, lilies, bulbs, seeds : wholesale catalog, spring 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens, 1935)

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 : 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)

Harris seeds 1926 [catalog] - Harris, Joseph. (Joseph Harris Company, 1926)

Hemerocallis (daylilies), beauty of the day : fall 1938 spring 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Howard, 1938)

Hemerocallis list : 1940-spring, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lark Meadows Gardens, 1940)

Henderson's Bulb Culture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1890)

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 & Co, 1910)

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

Henderson's Handbook of plants - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1881)

Das Herbarienbuch : Erklärung des natürlichen Pflanzensystems, systematische Aufzählung, Synonymik und Register der bis jetzt bekannten Pflanzengattungen ... = Repertorium herbarii, sive, Nomenclator generum plantarum systematicus synonymicus et alphabeticus ad usum practicum accommodatus ... - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (In der Arnoldischen Buchh, 1841)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1984)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1985)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1986)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1987)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1988)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1989)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1990)