Green thumb news - Denver Botanic Gardens. (Educational Dept., Denver Botanic Gardens, Inc.], 1988)

Green thumb news - Denver Botanic Gardens. (Educational Dept., Denver Botanic Gardens, Inc.], 1997)

Green thumb news - Denver Botanic Gardens. (Educational Dept., Denver Botanic Gardens, Inc.], 1998)

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

Greenbrook Nurseries, State Highway 29, Dunellen, N.J - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greenwood Nurseries, 1933)

Greenhouse and decorative plants : retail price list, 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roy F. Wilcox & Co, 1943)

Greenhouse and decorative plants : retail price list, December 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roy F. Wilcox & Co, 1944)

Greenhouse and decorative plants : retail price list, December, 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roy F. Wilcox & Co, 1943)

Greenhouse management - Taft, L. R. (Levi Rawson), 1859 - (Orange Judd company, 1898)

Greenhouse management. A manual for florists and flower lovers on the forcing of flowers, vegetables and fruits in greenhouses, and the propagation and care of house plants - Taft, L. R. (Levi Rawson), 1859 - (O. Judd, 1898)

Greenhouse management. A manual for florists and flower lovers on the forcing of flowers, vegetables and fruits in greenhouses, and the propagation and care of house plants - Taft, L. R. (Levi Rawson), 1859 - (Orange Judd company, 1906)

Greensboro Nurseries : fruits and ornamentals, landscape service [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greensboro Nurseries, 1931)

Greensboro Nurseries : fruits and ornamentals, landscape service [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greensboro Nurseries, 1928)

Greensboro Nurseries : fruits and ornamentals, landscape service [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greensboro Nurseries, 1930)

Greenwood Nurseries, Incorporated, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greenwood Nurseries, Inc, 1938)

Grevillea - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Williams and Norgate, 1882)

Grevillea - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Williams and Norgate, 1885)

Griffing for your garden, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Nurseries, 1938)

Griffing Nurseries, Beaumont, Texas - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Nurseries, 1934)

Griffing Nurseries : spring 1928 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Nurseries, 1928)

Griffing's 1914 tree book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Brothers, 1914)

Griffing's 1916 tree and plant book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.O. Painter Printing Co.], 1916)

Griffing's 1927 garden guide for the Southwest : beauty out-o-doors - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Nurseries, 1927)

Griffing's catalog. 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing's Nurseries, 1917)

Griffing's planters price catalogue : 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Brothers, 1915)

Griffing's wholesale catalog 1931 for nurserymen and dealers only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Griffing Nurseries, 1931)

Die Grossschmetterlinge der Erde : eine systematische Bearbeitung der bis jetzt bekannten Grossschmetterlinge - Seitz, Adalbert, 1860 -1938 (Verlag des Seitzschen Werkes (Alfred Kernen), 1954)

Ground cover plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hugh B. Barclay, 1950)

Ground cover plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peekskill Nurseries, 1958)

Grow trees, evergreens, shrubs, perennials and fruits from seeds : fall - 1926 and spring - 1927 [price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Conyers B. Fleu, Jr, 1926)

Grow trees, evergreens, shrubs, perennials and fruits from seeds : fall - 1927 and spring - 1928 [price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Conyers B. Fleu, Jr, 1927)

Growers of Thorndale ivies, and other hardy vines and ground cover plants : 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thorndale Farm, 1957)

Growers of Thorndale ivies, and other hardy vines and ground cover plants : 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thorndale Farm, 1953)

Growers of Thorndale ivies, and other hardy vines and ground cover plants : 1953 [revised prices] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thorndale Farm, 1953)

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)

gui yang min jian yao cao - gui yang shi wei sheng ju bian (gui zhou ren min chu ban she, 1959)

Guidelines for coordinated management of noxious weeds in the Greater Yellowstone Area - United States. National Park Service. (Greater Yellowstone Coordination Committee, 1990)

Gulielmi Hudsoni, Regiae Societatis Socii et Pharmacopaei Londinensis, Flora anglica : exhibens plantas per regnum angliae sponte crescentes, distributas secundum systema sexuale : cum differentiis specierum, synonymis autorum, nominibus incolarum, solo locorum, tempore florendi, officinalibus pharmacopaeorum - Hudson, William, 1730? -1793 (Impensis auctoris, 1762)

Hand book and catalogue of pot grown rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mayfair Nurseries, 1948)

A hand-book of the Peak of Derbyshire, and to the use of the Buxton mineral waters - Royal College of Physicians of London. (John Cumming Bates, 1872)

A hand-book of the Peak of Derbyshire, and to the use of the Buxton mineral waters - Royal College of Physicians of London. (C. F. Wardley, 1886)

Handbook and catalog of pot grown rock plants for 1950 and 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mayfair Nurseries, 1950)

Handbook and price list : rare and interesting plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Southern California Acclimatizing Association, 1911)

Handbook of choice ornamental trees, shrubs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Audubon Nursery, 1917)

A handbook of plant-form for students of design; one hundred plates, comprising nearly 800 illustrations, drawn and described, and with an introductory chapter on design and a glossary of botanical terms - Clark, Ernest Ellis, 1869 - (Batsford, 1905)

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

Handbook of practical botany for the botanical laboratory and private student - Strasburger, Eduard, 1844 -1912 (Swan Sonnenschein, 1900)

A handbook of systematic botany - Warming, Eugenius, 1841 -1924 (Macmillan & Co, 1895)

A handbook of systematic botany - Warming, Eugenius, 1841 -1924 (Swan, 1904)

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, 1915)

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)

Handbuch der biochemischen Arbeitsmethoden - Abderhalden, Emil, 1877 -1950 (Urban & Schwarzenberg, 1910)

Handbuch der biochemischen arbeitsmethoden - Abderhalden, Emil, 1877 -1950 (Urban & Schwarzenberg, 1910)

Handbuch der Botanik - Schenk, A. (August), 1815 -1891 (E. Trewendt, 1879)

Handbuch der Naturbeschreibung zum Schul- und Privatunterrichte - Tetzner, Wilhelm. (Im Verlage der Hahnschen Hofbuchhandlung, 1826)

Handbuch der Pflanzenkrankheiten - Graebner, Paul, 1871 -1933 (P. Parey, 1928)

Handbuch der Pflanzenkrankheiten - Graebner, Paul, 1871 -1933 (P. Parey, 1925)

Handbuch der Pflanzenkrankheiten - Sorauer, Paul, 1839 -1916 (P. Parey, 1921)

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

Handbuch der pharmaceutischen Botanik. : Mit illuminirten Kupfern - Volckart, Johann Friedrich, 1750 -1812 (Im Verlag der Stein'schen buchhandlung, 1804)

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

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

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, 1885)

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, 1889)

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, 1893)

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

Hardy English ivy, selected strains - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cunningham Gardens, Incorporated, 1958)

Hardy flowering perennials, roses, shade and flowering trees, shrubs, hedge plants, vines, evergreens, fruit trees, and small fruits : 1928 price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bristol Nurseries, Inc, 1928)

Hardy flowering perennials, roses, shade and flowering trees, shrubs, hedge plants, vines, evergreens, fruit trees, and small fruits : price list, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bristol Nurseries, Inc, 1929)

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

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, 1931)

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, 1930)

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

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 perennial plants [price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upper Bank Nurseries, 1927)

Hardy perennial plants : spring 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John Dieckmann & Sons, 1950)

Hardy perennial plants : spring 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John Dieckmann & Sons, 1955)

Hardy perennials, trees, evergreens, shrubs, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1947)

Hardy perennials, trees, evergreens, shrubs, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1944)

Hardy perennials, trees, evergreens, shrubs, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1945)

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

Hardy plant and service book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Outdoor Arts Company, Incorporated, 1928)

Hardy plant materials [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.V. Lawrence, 1929)

Hardy plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fairfax Farms Nursery, 1926)

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 and trees for garden and orchard : reference guide and catalog, what and where to plant - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Lehde Nurseries, 1937)

Hardy plants for Long Island - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hart's Lynbrook Nurseries, 1917)

Hardy plants : price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jones Ornamental Nursery, 1949)

Hardy plants : price list, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jones Ornamental Nursery, 1946)

Hardy plants : price list, 1946-47 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jones Ornamental Nursery, 1946)

Hardy plants : price list, 1947-48 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jones Ornamental Nursery, 1947)

Hardy plants : price list, fall '48-spring '49 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jones Ornamental Nursery, 1948)

Hardy plants : roses, shrubs, lilies, bulbs, seeds : wholesale catalog, spring 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wayside Gardens Co, 1941)

Hardy trees and plants for every purpose, 1893-1944, 51st year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (B.F. Barr Nurseries, 1944)

Hardy trees and plants for every purpose, 1893-1945, 52d year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (B.F. Barr Nurseries, 1945)

Hardy trees and plants of quality - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bulk's Nurseries, 1926)

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

Hardy trees, shrubs, evergreens, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gramatan Gardens of Clark the Florist, 1923)

Hardy trees, shrubs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Daybreak Nurseries, 1936)

Hardy trees, shrubs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Louis A. Byrne Nurseries, Inc, 1936)

Hardy trees, shrubs, roses and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.W. Stuart & Co, 1925)

[Harlan P. Kelsey (Firm) materials] - Harlan P. Kelsey (Firm) (1885)

Harman's general catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (M.H. Harman Company, 1915)

Harmsworth's Universal encyclopedia - Hammerton, John Alexander, Sir, 1871 -1949 (Educational Bk. Co, 1900)

Harrisons' annual nursery book : largest growers of fruit trees in the world - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1934)

Harrisons' nurseries - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1928)

Harrisons' nurseries - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1918)

Harrisons' nurseries - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1917)

Harrisons' nurseries 1924 : largest growers of fruit trees in the world - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1924)

Harrisons' Nurseries [catalog and price list] - Harrison's Nurseries (Berlin, Md.) (Harrisons' Nurseries, 1929)

Harrisons' Nurseries : fruit and ornamental nursery stock - Harrison's Nurseries (Berlin, Md.) (Harrisons' Nurseries, 1916)

Harrisons' nurseries : Harrisons' trees and shrubs - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1920)

Harrisons' nurseries, inc. : nurserymen - orchardists - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1931)

Harrisons' nurseries : nurserymen and orchardists - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1919)

Harrisons' nurseries : nurserymen - orchardists - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1920)

Harrisons' nurseries : "nurserymen - orchardists" - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1921)

Harrisons' nurseries : nurserymen - orchardists - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1921)

Harrisons' nurseries : "nurserymen - orchardists" - Harrison's Nurseries (Berlin, Md.) (J. G. Harrison & Sons, 1923)

Harrisons' nursery book 1932 : true to name quality nursery products - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1932)

Harrisons' nursery book for fall & winter 1932 : quality stock and true to name - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1932)

Harrisons' planters guide : spring 1935 - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1935)

Harrisons' planting guide 1933 : plant fruit for profit - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1933)

Harrisons' planting guide 1936 : superior fruits and ornamentals - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1936)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1928)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1937)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1945)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1944)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1942)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1940)

Hastings' nursery annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1946)

Hastings' nursery annual : winter 1930-1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1930)

Hastings' nursery annual : winter 1932-1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1932)

Hastings' nursery annual : winter 1933-1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1933)

Hastings' nursery annual : winter 1933-1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1940)

Hastings' nursery annual : winter 1943-44 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1948)

Hastings Seed Company Records - H.G. Hastings; Company (Ga.) (1931)

Hastings' seeds bulbs plants supplies : fall 1935 1936 winter - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1935)

Hastings' seeds : fall 1936 92nd catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1936)

Hastings' Seeds : spring 1929 77th catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.G. Hastings Co, 1931)

Hauptpreisverzeichnis, 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1928)

Hauptpreisverzeichnis, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1929)

Der Hausvater - Münchhausen, Otto, Freiherr von, 1716 -1774 (Försters und Sohns Erben, 1765)

Der Hausvater - Münchhausen, Otto, Freiherr von, 1716 -1774 (Försters und Sohns Erben, 1770)

Hedge Lawn Nurseries, Roanoke, Virginia : [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hedge Lawn Nurseries, 1926)

Hedge Lawn Nursery, Roanoke, Virginia [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hedge Lawn Nursery, 1927)

Hedge Lawn's garden guide [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hedge Lawn Nurseries, 1927)

Hedges and evergreens - Warder, J. A. (John Aston), 1812 -1883 (A. O. Moore, 1858)

Hedwigia (Verlag und Druck von C. Heinrich, 1894)

Hedwigia (Verlag und Druck von C. Heinrich, 1905)

De heide als handelsgewas en sierplant - Uikens, Th. F. (K. van Hulst, 1858)

Helios - Huth, Ernst, 1845 -1897 (R. Friedländer & Sohn, 1892)