[Observations sur les lépidoptères] - Bellier de La Chavignerie, Eugène, 1819 -1888 (s.n, 1880)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1859)

Offering - seedlings & established propagations - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashcroft Orchids, 1957)

Official catalogue - International Live Stock Exposition. (Pettibone, 1901)

Official catalogue - International Live Stock Exposition. (Pettibone, 1908)

Official catalogue of exhibitors. Universal exposition. St. Louis, U.S.A. 1904. : Division of exhibits. Department A. Education [to H. Agriculture; J. Horticulture to P. Physical Culture; R. Livestock.] (For the Committee on press and publicity by the official catalogue company inc, 1904)

Official catalogue of the first annual stock and farm show - Live stock society of America. (F. M. Crossett, 1895)

Official lists and indexes of names and works in zoology - International Commission on Zoological Nomenclature (ICZN, 1987)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1916)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1900)

Olds' field, garden and flower seeds : sixty-fourth year 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1951)

Olds' seeds, 1950, sixty-third year : field, garden and flower - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1950)

Olds' seeds, field, garden and flower seeds : 1947, 60th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1947)

Olds' seeds, field, garden and flower seeds : 1948, sixty-first year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1948)

Olds' seeds,1949, sixty-second year : field, garden and flower - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1949)

Omnium stirpium sciagraphia et icones : quibus plantarum et radicum tum in hortis cultarum, tum in vrbium fossis & muris, pratis, aruis, montibus, collibus, nemoralibus, fluviis, riguis & littoralibus, villis & pagis, spontè provenientium, nomina, figura, natura, natales, synonyma, vsus & virtutes, docentur : cum doctissimorum scriptorum circa eas consensu & dissensu - Chabrey, Dominique, 1610 -1669 (Sumptibus Samuelis de Tournes, 1678)

On Surrey hills - Jordan, Denham (W. Blackwood and sons, 1892)

On Surrey hills - Jordan, Denham (Blackwood, 1891)

One year field grown perennials, field grown hardy phlox, highest quality peonies, chrysanthemums, hardy bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (North Acre Gardens, 1947)

Onoranze a Ulisse Aldrovandi nel terzo centenario dalla sua morte celebrate in Bologna - Aldrovandi, Ulisse, 1522 -1605 (P. Galeati, 1908)

An open creel - Sheringham, Hugh Tempest, 1876 -1930 (Methuen, 1910)

The open door to independence; making money from the soil; what to do–how to do, on city lots, suburban grounds, country farms, together with outline maps of all parts of the United States, irrigated regions, climates, cities, villages, market towns, locations and populations - Hill, Thomas E. (Thomas Edie), 1832 -1915 (Hill standard book company, 1915)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1959)

Orchard and farm (Calkins Newspaper Syndicate, 1898)

The Orchid world. A monthly illustrated journal entirely devoted to orchidology - Wilson, Gurney, 1878 - (Alabaster, Passmore & Sons, ltd., printers], 1914)

The Orchid world. A monthly illustrated journal entirely devoted to orchidology - Wilson, Gurney, 1878 - (Alabaster, Passmore & Sons, ltd., printers], 1915)

Orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L. Sherman Adams Co, 1943)

The Oriskany fauna of Becraft Mountain, Columbia County, N. Y - Clarke, John Mason, 1857 -1925 (University of the State of New York, 1900)

The Oriskany fauna of Becraft Mountain, Columbia County, N.Y - Clarke, John Mason, 1857 -1925 (University of the State of New York, 1900)

Florist's journal (How and Parsons, 1842)

Florist's journal (How and Parsons, 1844)

Florist's journal (How and Parsons, 1846)

Ornithologische Monatsschrift - Deutscher Verein zum Schutze der Vogelwelt. (Kommissions-Verlag der Creutschen Verlagsbuchhandlung, 1910)

Ornithologisches Jahrbuch (V. Tschusi, 1910)

Orthoptera (Acridiidae) - Kirby, W. F. (William Forsell), 1844 -1912 (Taylor and Francis ; [etc., etc.], 1914)

Ortus sanitatis - Prüss, Johann, 1446 or 1447 -1510 (Johann Prüss)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1888)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Our woodlands, heaths, and hedges a popular description of trees, shrubs, wild fruits, etc., with notices of their insect inhabitants - Coleman, W. S. (William Stephen), 1829 -1904 (Routledge, Warnes, & Routledge, 1859)

Out of doors : a selection of original articles on practical nautral history - Wood, J. G. (John George), 1827 -1889 (Longmans, Green, 1903)

Out of doors; a selection of original articles on practical natural history - Wood, J. G. (John George), 1827 -1889 (Longmans, Green, and co, 1882)

Out of doors: a selection of original articles on practical natural history - Wood, J. G. (John George), 1827 -1889 (Longmans, Green, and Co, 1874)

Pacific seabirds : a publication of the Pacific Seabird Group - Pacific Seabird Group. (The Group, 2006)

Page's seed annual 1904 : vegetable, flower and farm seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Page Seed Co, 1904)

Page's seed annual 1905 : vegetable, flower and farm seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Page Seed Co, 1905)

Page's seed annual 1906 : vegetable, flower and farm seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Page Seed Co, 1906)

Paleobotany and biogeography : a festschrift for Alan Graham in his 80th year - Raven, Peter H (Missouri Botanical Garden, 2014)

Paléontologie française : description zoologique et géologique de tous les animaux mollusques et rayonnés fossiles de France : comprenant leur application à la reconnaissance des couches - Orbigny, Alcide Dessalines d', 1802 -1857 (Chez l'auteur, 1840)

Pantology; or, A systematic survey of human knowledge; proposing a classification of all its branches, and illustrating their history, relations, uses, and objects; with a synopsis of their leading facts and principles; and a select catalogue of books on all subjects, suitable for a cabinet library ... - Park, Roswell, 1807 -1869 (Hogan & Thompson, 1843)

Papers, literary, scientific, & c - Colvin, Sidney, Sir, 1845 -1927 (Longmans, Green, and Co, 1887)

Papers, literary, scientific, etc - Colvin, Sidney, Sir, 1845 -1927 (Longmans, Green, 1887)

Papers on Diptera - Meade, Richard Henry 1814 -1899 (Smithsonian Institution, 1880)

The papilios of Great Britain : systematically arranged, accurately engraved, and painted from nature with the natural history of each species ... - Lewin, William, 1795 (Printed for J. Johnson, 1795)

The papilios of Great Britain, systematically arranged, accurately engraved, and painted from nature, with the natural history of each species, from a close application to the subject, and observations made in different countries of this kingdom; as well as from breeding numbers from the egg, or caterpillar, during the last thirty years - Lewin, William, 1795 (Printed for J. Johnson, 1795)

Papillons d'Europe, peints d'après nature - Devillers, Charles, 1724 -1809 (Chez P.M. Delaguette, imprimeur-libraire, 1779)

Papillons d'Europe, peints d'après nature - Devillers, Charles, 1724 -1809 (Chez P.M. Delaguette, imprimeur-libraire, 1782)

Park's flower book for 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1958)

Park's illustrated flower book of choice dependable seeds : season of 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Company, 1935)

Park's illustrated flower book of choice dependable seeds, season of 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1934)

Park's illustrated flower book of choice dependable seeds, season of 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1937)

Park's illustrated flower book of choice dependable seeds, season of 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1936)

The passenger pigeon in Ontario - Royal Ontario Museum of Zoology. (University of Toronto Press, 1935)

The pastoral review (Wool Exchange, 1921)

Pease Garden and Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pease Garden and Nursery, 1901)

Pedigrees of English Short-horn bulls, to which American Short-horns trace - Allen, Lewis F. (Lewis Falley), 1800 -1890 (Warren, Johnson, 1874)

Peonies and irises, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.F. Wassenberg Peony and Iris Farms, 1934)

Peonies and irises, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.F. Wassenberg Peony and Iris Farms, 1935)

Peonies and irises, quality stock : wholesale prices, fall 1935, spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.F. Wassenberg Peony and Iris Farms, 1935)

Peonies and irises : Wholesale price list, fall '39 – spring '40 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wassenberg's Peony and Iris Farms, 1939)

Peonies, iris, hemerocallis, poppies : fall 1945–spring 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.F. Wassenberg Peony and Iris Farms, 1945)

Peonies, iris, hemerocallis, poppies, fall '44 – spring '45 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.F. Wassenberg Peony and Iris Farms, 1944)

Peonies, irises, poppies : price list, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (LeGron Floral Co, 1936)

Peonies, irises, poppies : price list, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (LeGron Floral Co, 1937)

Peonies, irises, poppies : price list, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (LeGron Floral Co, 1938)

Peonies, irises, poppies : price list, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (LeGron Floral Co, 1939)

Perennials you must have - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Richards Gardens, 1953)

Perry's seeds, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1936)

Perry's seeds, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1937)

Perry's seeds, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1938)

Perry's seeds, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1939)

Perspectives - Field Museum of Natural History. (The Museum, 1991)

Petites nouvelles entomologiques (E. Deyrolle, 1869)

Petunias for profit : fall 1941 seed, bulbs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Bulb Company, 1941)

"Petunias for profit", season 1940-1941 : petunia seeds and bulbs : wholesale price list for florists, seedsmen and nurserymen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Bulb Company, 1940)

Die pflanzen-mischlinge : ein beitrag zur biologie der gewächse - Focke, Wilhelm Olbers, 1834 -1922 (Gebrüder Borntrager, 1881)

Die Pflanzenfeinde aus der Klasse der Insekten. Ein nach Pflanzenfamilien geordnetes Handbuch sämmtlicher auf den einheimischen Pflanzen bisher beobachteten Insekten zum Gebrauch für Entomologen, Insektensammler, Botaniker, Land- und Forstwirthe und Gartenfreunde - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (J. Hoffmann, 1874)

Das Pflanzenleben der Schweiz - Christ, H. (Hermann), 1833 -1933 (F. Schulhess, 1882)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1913)

The phantom bouquet : a popular treatise on the art of skeletonizing leaves and seed-vessels and adapting them to embellish the home of taste - Parrish, Edward, 1822 -1872 (J.B. Lippincott, 1864)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 1982)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 1998)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 2006)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1909)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1919)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1828)

The Philosophical transactions of the Royal society of London, from their commencement in 1665, in the year 1800 - Royal Society (Great Britain) (Printed by and for C. and R. Baldwin, 1809)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1713)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1714)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1740)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1965)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1989)

Phytoneuron (Guy L. Nesom, 2018)

The pictorial gallery of English race horses : containing portraits of all the winners of the Derby, Oaks and St. Leger Stakes, during the last twenty years ; and a history of the principal operations of the turf - Cooper, Abraham, 1787 -1868 (Henry G. Bohn, 1850)

A pictorial geography of the world : comprising a system of universal geography, popular and scientific ... : with a copious index, answering the purpose of a gazetteer - Goodrich, Samuel G. (Samuel Griswold), 1793 -1860 (Published by C.D. Strong, 1849)

Pike and perch - Senior, William, 1838 -1920 (Longmans, Green, 1900)

Piper's chrysanthemums and plant novelties of distinction, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Piper's, 1938)

Piper's chrysanthemums, carnations and plant novelties of distinction - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Piper's, 1939)

Plant & eat vegetables for health : 1936, forty-third annual catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Aggeler & Musser Seed Co, 1936)

The plant explorer's notebook - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Barnes Importers, 1951)

Plant life - American Plant Life Society. (American Plant Life Society, 1953)

Plant list and notes : California and Nevada - Clokey, Ira W. (Ira Waddell), 1878 -1950 (1937)

Plant Vestal iris this fall for finest blooms next spring - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vestal's Iris Garden, 1942)

Plantae Europeae.Enumeratio systematica et synonymica plantarum phaenerogamicarum in Europa sponte crescentium vel mere inquilinarum - Richter, Karl, 1855 -1891 (W. Engelmann, 1890)

Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss - Lehmann, Johann Georg Christian, 1792 -1860 (Sumptibus Meissneri, 1846)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1977)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1982)

Pleasant ways in science - Proctor, Richard A. (Richard Anthony), 1837 -1888 (Longmans, Green, 1905)

The poets and nature : reptlies, fishes, and insects - Robinson, Phil, 1847 -1902 (Chatto & Windus, 1893)

Points of the horse : a familiar treatise on equine conformation - Hayes, M. Horace (Matthew Horace), 1842 -1904 (W. Thacker, 1893)

Points of the horse; a treatise on the conformation, movements, breeds and evolution of the horse - Hayes, M. Horace (Matthew Horace), 1842 -1904 (W. Thacker & co, 1897)

The points of the horse : a familiar treatise on equine conformation - Hayes, M. Horace (Matthew Horace), 1842 -1904 (W. Thacker, 1893)

Polskie pismo entomologiczne = Polish journal of entomology = Bulletin entomologique de Pologne - Polski Zwiazek Entomologiczny (Panstwowe Wydawn. Naukowe, 1924)

Popular British entomology : containing a familiar and technical description of the insects most common to the various localities of the British Isles - Catlow, Maria E. (Reeve, Benham, and Reeve, 1848)

Popular British entomology; containing a familiar and technical description of the insects most common to the localities of the British Isles - Catlow, Maria E. (Reeve and Co, 1852)

Popular British entomology : containing a familiar and technical description of the insects most common to the various localities of the British Isles - Catlow, Maria E. (Routledge, Wayne, & Routledge, 1860)