Oesterreichische botanische Zeitschrift (A. Skofitz, 1916)

Offer No. 59, November 1st, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Herbst Brothers, inc, 1930)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1902)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1859)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1909)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1918)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1905)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1903)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1906)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1912)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1899)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1902)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1897)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1901)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1900)

Old Colony Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1903)

On some Indian forest grasses and their oecology - Hole, R. S. (Superintendent Government Printing, India, 1911)

On the elaioplasts in mono- and dicotyledonous plants. –On special cellular bodies which form Anthocyanine. –On a special cellular body found in two orchids - Politis, Ioannes. (1914)

On the popular names of British plants, being an explanation of the origin and meaning of the names of our indigenous and most commonly cultivated species - Prior, R. C. Alexander (Richard Chandler Alexander), 1809 -1902 (Williams & Norgate, 1863)

Onze flora. Beschrijving van de familiën, voornamste geslachten en soorten der in Nederland in het wild groeiende, verwilderde, verbouwde en aangeplante gewassen, alsmede van eenige fraaie en nuttige midden-europeesche planten - Hoffmann, Carl, 1802 -1883 (W.J. Thieme, 1900)

Opuscula philolichenum (J. Lendemer, 2015)

Orchard & garden book, 1945 - Roeding, George Christian, 1868 -1928 (California Nursery Company, 1945)

Orchard & garden book, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1946)

Orchard and garden book : 1865-1950, 85th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Seed Company, 1950)

Orchard and garden book, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1936)

[Order forms] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Woodlot Seed Co, 1958)

Oregon Nursery Company [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oregon Nursery Company, 1920)

Organic chemistry in its applications to agriculture and physiology - Liebig, Justus, Freiherr von, 1803 -1873 (Printed for Taylor and Walton, 1840)

Organic chemistry in its applications to agriculture and physiology - Liebig, Justus, Freiherr von, 1803 -1873 (J. Owen, 1841)

The organic constituents of plants and vegetable substances and their chemical analysis - Wittstein, Georg Christian, 1810 -1887 (MCarron, Bird & Co, 1878)

Organographie der Pflanzen, insbesondere der Archegoniaten und Samenpflanzen - Goebel, K. (Karl), 1855 -1932 (G. Fischer, 1913)

Origin of cultivated plants - Candolle, Alphonse de, 1806 -1893 (K. Paul, Trench, 1884)

The origin of the British flora - Reid, Clement, 1853 -1916 (Dulau, 1899)

The Original Barnes nursery, established 1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barnes Bros. Nursery Co, 1931)

L'origine et le développement des flores dans le massif central de France; avec aperçu sur les migrations des flores dans l'Europe sud-occidentale - Braun-Blanquet, J. (Josias), 1884 -1980 (L. Lhomme, 1923)

Ornamental and fruit tree catalogue : 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Coates Nurseries, 1926)

Ornamental and fruit trees and shrubs. a guide to Southern horticulture ... 1918 catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, 1918)

Ornamental and fruit trees : illustrated descriptive catalog 1921-22 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Co, 1921)

Ornamental and fruit trees : price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Co, 1921)

Ornamental hardy plants of the better class : spring 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1906)

Ornamental nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Davenport-Guerry, 1936)

Ornamental Nurseries : catalogue of shade and ornamental trees, shrubs, vines, roses, perennial plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1908)

Ornamental plant explorations, Japan, 1961 - United States. Agricultural Research Service. (Agricultural Research Service, U.S. Dept. of Agriculture in cooperation with Longwood Gardens of the Longwood Foundation, Inc, 1966)

Ornamental shrubs for garden, lawn, and park planting, with an account of the origin, capabilities, and adaptations of the numerous species and varieties, native and foreign, and especially of the new and rare sorts, suited to cultivation in the United States - Davis, Lucius Daniel, 1826 - (Putnam, 1899)

Ornamental shrubs of the United States, hardy, cultivated - Apgar, A. C. (Austin Craig), 1838 -1908 (American Book Co, 1910)

Ornamental shrubs of the United States (hardy, cultivated) - Apgar, A. C. (Austin Craig), 1838 -1908 (American Book Company, 1910)

Ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thaddeus N. Yates & Co, 1915)

Ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thaddeus N. Yates & Co, 1910)

Ornamental trees and shrubs price list : spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph B. Gable, 1930)

Ornamental trees and shrubs price list : spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph B. Gable, 1931)

Ornamental trees, shrubs, and woody climbers - Macoun, W. T. (William Tyrrell), 1869 -1933 (Canada Dept. of Agriculture, 1927)

Ornamental trees, shrubs, evergreens and conifers : descriptive catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hogansville Nurseries, 1937)

Ornamental trees, shrubs, evergreens and conifers : descriptive catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hogansville Nurseries, 1935)

Ornamental trees, vines & shrubs : temporary price list, January 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Del Amo Nurseries, 1940)

Ornamental trees, vines and shrubs : descriptive price list, February 15, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Del Amo Nurseries, 1938)

Ornamentals [1931-32 season] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glen Saint Mary Nurseries Co, 1931)

Ornithological biography, or an account of the habits of the birds of the United States of America ; accompanied by descriptions of the objects represented in the work entitled The Birds of America, and interspersed with delineations of American scenery and manners - Audubon, John James, 1785 -1851 (Adam Black, 1834)

Orthoptera of northeastern America, with especial reference to the faunas of Indiana and Florida - Blatchley, W. S. (Willis Stanley), 1859 -1940 (The Nature Publishing Company, 1920)

Our 67th year, 1891-1958 : Champion Nurseries, wholesale price list, fall 1957 - spring 1958, Perry, Ohio, big enough to supply your needs, not too big to appreciate your business - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Champion Nurseries, 1957)

Our diamond jubilee : 1882-1957, 75th year : fall 1957, spring 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Glen Saint Mary Nurseries Company, 1957)

Our latest catalog of fruits, berries, roses, shrubs, ornamental trees, evergreens, perennial flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Benton County Nursery Co, 1940)

Our latest catalog of fruits, berries, roses, shrubs, ornamental tree, evergreens, perennial flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Benton County Nursery Co, 1939)