Handbook of the flora of Philadelphia and vicinity, containing data relating to the plants within the following radius: eastern Pennsylvania; all of New Jersey except the northern counties; and New Castle County, Delaware, with keys for identification of species - Brown, Stewardson, 1867 -1921 (Philadelphia Botanical Club, 1905)

A handbook of the trees of California - Eastwood, Alice, 1859 -1953 (California Academy of Sciences, 1905)

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)

Handbook of trees, shrubs, vines, ornamental plants and fruits : for lawns, parks, gardens, streets and country estates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1909)

Handbook of trees, shrubs, vines, ornamental plants and fruits : for lawns, parks, gardens, streets and country estates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1910)

Handbook of trees, shrubs vines, ornamental plants and fruits for lawns, parks, gardens, streets and country estates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1913)

Handbook of trees, shrubs vines, ornamental plants and fruits for lawns, parks, gardens, streets and country estates - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1915)

A handbook on beekeeping in California - California Agricultural Experiment Station. (California Agricultural Experiment Station Extension Service, 1954)

A handbook on beekeeping in California - Eckert, John Edward, 1895 - (University of California. Division of Agricultural Sciences, Agricultural Experiment Station, Extension Service, 1960)

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

Handbuch der botanischen terminologie und systemkunde - Bischoff, Gottlieb Wilhelm, 1797 -1854 (1830)

Handbuch der Laubholzkunde : Beschreibung der in Deutschland heimischen und im Freien kultivierten Bäume und Sträucher. Für Botaniker, Gärtner und Forstleute - Dippel, Leopold, 1827 -1914 (P. Parey, 1889)

Handbuch der Laubholzkunde. Beschreibung der in Deutschland heimischen und im Freien kultivierten Bäume und Sträucher - Dippel, Leopold, 1827 -1914 (P. Parey, 1889)

Handbuch der Naturgeschichte aller drei Reiche, fur Lehrer and Lernende, fur Schule und Haus - Bromme, Traugott, 1802 -1866 (1850)

Handbuch der Naturgeschichte. Zum Gebrauch bei vorlesungen - Burmeister, Hermann, 1807 -1892 (Verlag von Theod. Chr. Friedr. Enslin, 1836)

Handbuch der palaeontologie - Schimper, Wilhelm-Philippe, 1808 -1880 (R. Oldenbourg, 1890)

Handbuch der Petrefaktenkunde - Quenstedt, Fr. Aug. von (Friedrich August), 1809 -1889 (H. Laupp, 1885)

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)

Handbuch zur Erkennung der nutzbarsten und am häufigsten vorkommenden Gewächse - Link, Heinrich Friedrich, 1767 -1851 (Spenerschen Buchhandlung, 1831)

Handleiding tot de kennis der flora van Nederlandsch Indië : Beschrijving van de families en geslachten der Nederl. Indische phanerogamen - Boerlage, Jacob Gijsbert, 1849 -1900 (E.J. Brill, 1890)

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

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

Handy book on pruning, grafting and budding - Udale, James. (W. & H. Smith limited; [etc., etc.], 1920)

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

Die Harbkesche wilde Baumzucht theils Nordamerikanischer und anderer fremder : theils einheimischer Bäume, Sträucher und Strauchartigen Pflanzen, nach den Kennzeichen der Anzucht, den Eigenschaften und der Benutzung - Walwert, Georg Christoph, 1748 -1812 (im Verlage de Fürstl. Waisenhaus-Buchhandlung, 1771)

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Robert Hardwicke, 1879)

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Robert Hardwicke, 1886)

Hardwood record (Hardwood Co, 1915)

Hardy American evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hardy Evergreen Gardens, 1923)

Hardy American ornamental plants for immediate effects - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1934)

Hardy American ornamental plants for immediate effects : fall 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1935)

Hardy deciduous and evergreen trees, vines, shrubs and fruits : 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1930)

Hardy deciduous and evergreen trees, vines, shrubs and fruits - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1932)

Hardy deciduous and evergreen trees, vines, shrubs and fruits : 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1929)

Hardy deciduous and evergreen trees, vines, shrubs, perennials and fruits, etc. : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1928)

Hardy deciduous and evergreen trees, vines, shrubs, roses, perennials, fruits, etc. : 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1927)

Hardy deciduous and evergreen trees, vines, shrubs, roses, perennials, fruits, etc. : 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1925)

Hardy deciduous and evergreen trees, vines, shrubs, roses, perennials, fruits, etc. : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Co, 1924)

Hardy deciduous and evergreen trees, vines, shrubs, roses, perennials, fruits, etc. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Co, 1926)

Hardy deciduous and evergreen trees, vines, shrubs, roses, perennials, fruits, etc. : 1924 and 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1924)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2003)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2010)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2016)

Hardy ferns & flowers, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1901)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1898)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1901)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1903)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1904)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1908)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1910)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1912)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1913)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1915)

Hardy ferns and flowers, and roses : over 60 kinds of lilies, bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Gillett, Edward (Firm) (Edward Gillett, 1922)

Hardy ferns and flowers, roses, over 60 kinds of lilies : bog plants and orchids in great variety, hardy ornamentals, native shrubs, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Southwick Nurseries, 1982)

Hardy ferns and flowers, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1897)

Hardy ferns and flowers, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1899)

Hardy ferns and flowers, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1898)

Hardy ferns and flowers : Southwick Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1904)

Hardy fruits and ornamentals - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.L. Watrous, Capital City Nurseries, 1919)

Hardy herbaceous plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1924)

Hardy native and imported alpines and perennials : retail catalog 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1933)

Hardy native and imported alpines and perennials : retail catalog 1934-1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1934)

Hardy native and imported alpines and perennials : retail catalog 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1934)

Hardy native and imported alpines and perennials : retail catalog 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1936)

Hardy native and imported alpines and perennials : retail catalog 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1939)

Hardy native and imported alpines and perennials : retail catalog 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1940)

Hardy native and imported alpines and perennials : retail catalog 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1938)

Hardy native and imported alpines and perennials : retail catalog 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1941)

Hardy native and imported alpines and perennials : retail catalog 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1937)

Hardy native and imported alpines and perennials : retail catalog 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1944)

Hardy native and imported alpines and perennials : retail catalog 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Borsch & Son, Inc, 1942)

Hardy native and imported alpines and perennials : retail catalog, 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Saxton & Wilson, 1945)

Hardy native garden plants, selected varieties - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.M. Bassett, 1934)

Hardy native trees flowering shrubs : twenty-first annual wholesale price list : Spring and fall 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Charles G. Curtis Co, 1924)

Hardy ornamental flowering trees and shrubs - Webster, A. D. (Angus Duncan), 1855 -1931 (Smith, Elder, 1908)

Hardy ornamental plants for the south : trees, deciduous shrubs, broad-leaved evergreens, coniferous evergreens, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1922)

Hardy ornamental plants for the south : trees, deciduous shrubs, broad-leaved evergreens, coniferous evergreens, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1923)

Hardy ornamental plants for the south : trees, deciduous shrubs, broad-leaved evergreens, coniferous evergreens, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1924)

Hardy ornamental plants for the south : trees, deciduous shrubs, broad-leaved evergreens, coniferous evergreens, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1925)

Hardy ornamental trees and shrubs - James Veitch & Sons. (James Veitch & Sons, Ltd, 1911)

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 perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1930)

Hardy perennials for California gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1914)

Hardy perennials for California gardens : spring 1913-fall 1913 [catalog], fourth catalogue of hardy plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1913)

Hardy perennials, trees, evergreens, shrubs, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1936)

Hardy plants for the home garden, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Toole, 1939)

Hardy plants of rare quality : Fall 1903 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1903)

Hardy plants worth having : Spring 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1905)

Hardy trees and plants [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1914)

Hardy trees and plants [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1915)

Hardy trees, evergreens, vines, shrubs, roses, perennials, fruits, etc. : 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Co, 1923)

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

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 and evergreens, 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1928)

Hardy trees, shrubs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Naperville Nurseries, 1913)

Hardy trees, shrubs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1910)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1922)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United Litho. & Ptg. Cos, 1924)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1926)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1929)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1923)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1921)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1922)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1921)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Company, 1923)

Hardy trees, shrubs, perennials, evergreens, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1923)

Hardy trees shrubs, vines, evergreens, hardy perennials and fruits : Spring 1903 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1903)

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