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)

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

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

Handbuch der systematischen botanik, mit besonderer berücksichtigung der arzneipflanzen. Bd. 1 - Luerssen, Christian, 1843 -1916 (H. Haessel, 1879)

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

Handy book of horticulture; an introduction to the theory and practice of gardening - Hayes, Francis Carlile. (Murray, 1901)

The Harbinger - Illinois Native Plant Society. (Illinois Native Plant Society, 2015)

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, 1867)

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, 1880)

Hardy American ornamental plants - Gardens of the Blue Ridge (Nursery) (The Gardens)

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 American ornamental plants for immediate effects : spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1936)

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

Hardy American plants : the largest nursery-grown stock of native plants in America - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harlan P. Kelsey, 1898)

Hardy collected, evergreens, shrubs, vines, ferns, new lilies : wholesale list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Crosby Horsford, 1940)

Hardy deciduous trees and shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardens of the Blue Ridge, 1937)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1990)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1991)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1992)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1993)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1994)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1996)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1997)

Hardy Fern Foundation newsletter - Hardy Fern Foundation. (The Foundation, 1998)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 1998)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 1999)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2000)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2001)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2002)

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

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2004)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2005)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2006)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2007)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2008)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2009)

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

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2012)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2013)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2014)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2015)

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

Hardy ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (1916)

Hardy ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Strand Nursery Co, 1956)

Hardy ferns - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (1920)

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

Hardy ferns and flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kenneth E. Gillett, 1929)

Hardy ferns and flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kenneth E. Gillett, 1932)

Hardy ferns and flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kenneth E. Gillett, 1930)

Hardy ferns and flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kenneth E. Gillett, 1931)

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, 1890)

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, 1920)

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, 1898)

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

Hardy ferns and wild flowers : spring and fall 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1952)

Hardy ferns and wild flowers : spring and fall 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1953)

Hardy ferns and wild flowers : spring and fall 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1954)

Hardy ferns and wild flowers : spring and fall 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1955)

Hardy ferns and wild flowers : spring and fall 1955, 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1955)

Hardy ferns; how I collected and cultivated them - Bellairs, Nona Maria Stephenson. (Smith, Elder, 1865)

Hardy ferns, wild and rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1958)

Hardy ferns, wild and rock garden plants, evergreens, 1936 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1936)

Hardy ferns, wild and rock garden plants, evergreens, 1937 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1937)

Hardy ferns, wild and rock garden plants, evergreens, 1938 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1938)

Hardy ferns, wild and rock garden plants, evergreens, 1939 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1939)

Hardy ferns, wild and rock garden plants, evergreens, 1940 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1940)

Hardy ferns, wild and rock garden plants, evergreens : 1944 wholesale trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1944)

Hardy ferns, wild and rock garden plants, evergreens, hardy plants for better homes and gardens : 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1931)

Hardy ferns, wild and rock garden plants, evergreens, hardy plants for better homes and gardens : 1930 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1930)

Hardy ferns, wild and rock garden plants, evergreens, hardy plants for better homes and gardens : 1929 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1929)

Hardy ferns, wild and rock garden plants, evergreens, hardy plants for better homes and gardens : 1928-1929 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1928)

Hardy ferns, wild flowers, rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ferndale Nursery, 1943)

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 garden favorites [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van Laar & Company, 1926)

Hardy garden favorites [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van Laar & Company, 1927)

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

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 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)