The nursery-manual; a complete guide to the multiplication of plants - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1920)

Nursery propagation of woody and herbaceous perennials for the Prairie Provinces - Canada. Agriculture Canada (Communications Branch, Agriculture Canada, 1982)

Nursery stock and greenhouse products : wholesale list, spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1931)

Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1885)

Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1890)

Observations of the natural history of swallows; with a collateral statement of facts relative to their migration, and to their brumal torpidity: and a table of reference to authors ... - Forster, T. (Thomas), 1789 -1860 (Printed for T. and G. Underwood [etc.], 1817)

Observations of the naturalhistory of the swallowtribe : with collateral statement of facts relative to their migration, and to their brvmal torpidity : and a copivs table of reference to avthors : illustrated by figures of five species, engraved on wood, by Willis : to which is added, A general catalogue of British birds, with the provincial names for each, &c. &c. &c - Forster, T. (Thomas), 1789 -1860 (Printed for T. and G. Underwood ..., Baldwin, Craddock, and Joy, 1817)

Observations sur la floraison de quelques plantes cultivées, faites a Moscou, pendant les années 1844, 1845, 1846, 1847 et 1848 - Annenkof, Nikolai Ivanovitch, 1819 -1889 (1849)

Der Obstbau (W. Kohlhammer, 1914)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1876)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1889)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1890)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1899)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1846)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1848)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1851)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1850)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1880)

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)

Old Colony Nurseries Incorporated [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1914)

Old Colony Nurseries Incorporated [catalog] : 1840-1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1915)

One hundred and twenty copper-plates of English moths and butterflies : representing their changes into the caterpillar, chrysalis, and fly states, and the plants, flowers and fruits whereon they feed : coloured with great exactness from the subjects themselves : with a natural history of the moths and butterflies describing the method of managing, preserving, and feeding them - White, Benjamin, approximately 1724 -1794 (Printed for Benjamin White, at Horace's-Head, Fleet-Street, 1773)

Onomatologia Anatomica. Geschichte und Kritik der anatomischen Sprache der Gegenwart, mit besonderer Berücksichtigung ihrer Barbarismen, Widersinnigkeiten, Tropen und grammatikalischen Fehler - Hyrtl, Joseph, 1811 -1894 (W. Braumüller, 1880)

Onomatologia botanica completa : oder Vollständiges botanisches Wörterbuch ; worinn nicht nur alle Kunstwörter übersetzt und erklärt, die bekannte [sic] Pflanzen nach der Lehrart des Ritters von Linne beschrieben, ihre verschiedene Namen nach den berühmtesten Schriftstellern angeführt, und eine kleine Lebensgeschichte der vornehmsten Kräuterkundigen beygefügt, sondern auch die Heilskräfte und der Nutzen, den die Arzney-Wissenschaft, Landwirtschaft, Färberey, Vieharzney- und Scheidekunst aus denselben ziehen, aus den besten Schriften dieser Art und aus eigener Erfahrung erläutert werden von einer Gesellschaft erfahrner Pflanzenkundiger - Gmelin, Johann Friedrich, 1748 -1804 ([publisher not identified], 1774)

Opera e periodicis collata - Vries, Hugo de, 1848 -1935 (A. Oosthoek, 1918)

Opuscules de botanique - Clos, Dominique, 1821 -1908 (1859)

Orchids, stove, greenhouse and hardy plants, vegetable and flower seeds : for the trade only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1894)

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

The Original Barnes nursery, established 1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barnes Bros. Nursery Co, 1932)

Florist's journal (How and Parsons, 1842)

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

Ornamental nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1916)

Ornamental nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1908)

Ornamental nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1912)

Ornamental plants for landscape gardening : a catalog of dependable ornamentals for outdoor planting, 1925-1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weed's Landscape Nursery, 1925)

Ornamental plants for landscape gardening : a catalog of dependable ornamentals for outdoor planting, 1924-1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weed's Nursery, 1924)

Ornamental plants for landscape planting : a catalog of dependable ornamentals for outdoor planting, 1923-1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weed's Landscape Nursery, 1923)

Ornamental plants for landscape planting : a list of dependable ornamentals for outdoor art - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weed Landscape Nursery, 1922)

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

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

Ornamental trees and plants for home grounds and other landscape gardening, fruit trees for commercial orchards and home gardens : No. 127 price list, fall 1927-spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz' Sons & Co, 1927)

Ornamental trees, evergreens, shrubs, roses, bulbs and plants for the garden : 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Danker Florist, 1922)

Ornamental trees, evergreens, shrubs, roses, bulbs and plants for the garden : 1898-1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Danker Florist, 1925)

Ornamental trees, evergreens, shrubs, roses, bulbs and plants for the garden : 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Danker Florist, 1926)

Ornamental trees, evergreens, shrubs, roses, bulbs and plants for the garden : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (A.T. De La Mare Co., Horticultural Printers, 1928)

Ornamental trees, evergreens, shrubs, roses, bulbs and plants for the garden : 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Danker Florist, 1927)

Ornamental trees, shrubs, roses, bedding plants : catalog number fifteen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (East Lawn Nursery, 1930)

Ornamental trees, shrubs, vines and perennial plants, flowering bulbs, roses, fruit trees, small fruits, landscape service - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James J. McManmon, 1916)

L'Ortolano... publicato dalla Società fiorense. ed. ortense del litorale

Our 25th anniversary, 1917-1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William M. Hunt & Co, 1942)

Our 50th anniversary, 1905-1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Burnett Bros., Inc, 1955)

Our garden flowers; a popular study of their native lands, their life histories, and their structural affiliations - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1910)

Our mountain garden - Thomas, Rose Fay, 1852 -1929 (E.P. Dutton & Co, 1915)

Our mountain garden - Thomas, Rose Fay, 1852 -1929 (E.P. Dutton, 1915)

Outdoor beauty for your home - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.M. Hobbs & Sons, 1928)

Outdoor guide to better gardens, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (West Hill Nurseries, Incorporated, 1932)

Outlines of medical botany :comprising vegetable anatomy and physiology...and a glossary of terms - Reid, Hugo. (Maclachlan, Stewart & Co, 1896)

Outpost [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Outpost Nurseries, 1923)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1916)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1917)

Palisades popular perennials : hardy gardens easily made for the busy man - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (R.W. Clucas, 1912)

Palisades popular perennials : hardy gardens easily made for the busy man and woman - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1927)

Palisades popular perennials : supplement of new, rare, and meritorious hardy plants 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (R.W. Clucas, 1911)

Palmer's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palmer Seed Company, 1930)

Palmer's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palmer Seed Company, 1931)

Palmer's seeds : 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palmer Seed Company, 1929)

Palmer's seeds, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palmer Seed Company, 1932)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1886)

Pamphlets on silviculture (1899)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1902)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1912)

The Park Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Park Nurseries, 1927)

Park's illustrated flower book of choice dependable seeds, season of 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1933)

A partial list of plants available for various uses in general landscape planting - Taylor, Albert D. (Albert Davis), 1883 -1951 (A.D. Taylor, 1916)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1837)

Payne's garden guide [of] seeds, plants & trees : 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1922)

Payne's garden guide [of] seeds, plants and trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1918)

Payne's garden guide [of] seeds, plants and trees : 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1925)

Payne's garden guide : seeds, plants & trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1920)

Payne's garden guide : seeds, plants & trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1921)

Payne's garden guide seeds, plants & trees : 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1923)

Payne's garden guide : seeds, plants and trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1924)

Payne's garden guide : seeds, plants and trees : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1928)

Payne's garden guide : seeds, plants and trees : 1929 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1929)

Payne's garden guide : seeds, plants and trees, 1930 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1930)

Payne's garden guide : seeds, plants and trees, 1931 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1931)

Payne's garden guide : seeds, plants and trees, 1932 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1932)

Peonies, bulbs, poppies, and other specialties : plant in Autumn for Spring beauty - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Co, 1929)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1922 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Newcomb & Gauss, 1922)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1924 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Newcomb & Gauss, 1924)

Peonies, hardy garden perennials, ornamental evergreens, shade trees, shrubs : 1938, superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cherry Hill Nurseries, 1938)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1934 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1934)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1935 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1935)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1928 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1928)

Peonies, hardy garden perennials, ornamental evergreens, shade trees, shrubs : 1936, superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cherry Hill Nurseries, 1936)

Peonies, hardy garden perennials, ornamental evergreens, shade trees, shrubs : 1937, superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cherry Hill Nurseries, 1937)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1933 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1933)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1932 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlows and Stranger, Inc, 1932)

Peonies, iris, phlox and other perennials : 1920-1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow & Sons, 1921)

Peonies, iris, phlox and other perennials : 1921-1922 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Newcomb & Gauss, 1921)

Peonies, irises and perennials : 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Crawford Gardens, 1927)

Peonies, irises and perennials : spring 1924 catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Crawford Gardens, 1924)

Peony list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Lindemann, 1945)

Peony list, beautiful garden perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Lindemann, 1943)

Perennial and rockery plants : shrubs, trees, vines, evergreens, and roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenside Nurseries, 1930)

Perennial border plants, list No. 10 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (White & Johnson Co, 1933)

Perennial plants for the florist, the landscaper, the garden, the border, the rockery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Co, 1935)

Perennial plants, shrubs, trees, vines, evergreens, and roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenside Nurseries, Inc, 1929)

Perennial plants, shrubs, trees, vines, evergreens, and roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenside Nurseries, 1928)

Perennial specialties, 1936 fall trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.J. Snyder, 1936)

Perennial specialties, 1936 spring trade list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.J. Snyder, 1936)

Perennials, alpines and rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cowgill & Rogers, 1929)

Perennials and other hardy ornamental plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cottage Gardens, 1927)

Perennials and rock plants : descriptive list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Nicolson & Thurston Nurseries, 1926)

Perennials and rock plants [descriptive price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Nicolson & Thurston Nurseries, 1927)

Perennials and rock plants for your pleasure - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andrew Simon, 1934)

Perennials, flowering shrubs, rock plants, evergreens : 1926 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1926)

Perennials in your garden - Canada. Agriculture Canada (Agriculture Canada, 1983)

Perennials, rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roberts Rose Co, 1930)

Perennials, rock plants, flowering shrubs, evergreens : 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1927)

Perennials, rock plants, flowering shrubs, evergreens : 1928 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1928)

Perennials, rock plants, flowering shrubs, evergreens, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1929)

Perennials, rock plants, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Somerset Rose Nursery, Incorporated, 1933)

Perennials, shrubs, trees, vines, ferns, espaliers, ground covers : wholesale list, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1944)

Perennials, shrubs, trees, vines, ferns, espaliers : retail and wholesale list, 1941-1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1941)

The perfect garden, how to keep it beautiful and fruitful, with practical hints on eonomical management and the culture of all the principal flowers, fruits, and vegetables - Wright, Walter P. (Walter Page), 1864 -1940 (J. B. Lippincott company; [etc., etc.], 1908)

Perfection seeds, bulbs, plants and garden requisites for 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William M. Hunt & Co., Inc, 1922)

Perfection seeds, bulbs, plants and garden requisites for 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William M. Hunt & Company, 1921)

Periodical catalogue of fruit and ornamental trees and plants, cultivated at the Lake Erie Nurseries, Cleveland, Cuyahoga County, O - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elliott & Co, 1846)

Periodical catalogue of fruit and ornamental trees and plants : 1845 & 1846 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph H. Jennings, Printer, 1845)

Periodical catalogue of fruit and ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hopkins & Jennings, Printers, 1843)

Periodical catalogue of fruit and ornamental trees and shrubs, green house plants, &c., cultivated and for sale at Bartram's Botanic Garden, Kingsessing - Bartram's Garden (Philadelphia, Pa.) (Russell and Martien, 1828)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Peter Henderson, Stumpp & Walter : 1953 garden annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson, Stumpp & Walter Co, 1953)

Peter's perennial and other plants : with which to create anew the old-time hardy gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter's Nursery Company, 1909)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1909)

Die Pflanzenstoffe in chemischer, physiologischer, pharmakologischer und toxikologischer Hinsicht : für Aerzte, Apotheker, Chemiker und Pharmakologen - Husemann, August, 1833 -1877 (J. Springer, 1871)

Die Pflanzenwelt Norwegens : ein Beitrag zur Natur- und Culturgeschichte Nord-Europas - Schübeler, F. C. (Frederik Christian), 1815 -1892 (1873)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1814)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1815)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1824)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1842)

Phosphorescence; or, The emission of light by minerals, plants, and animals - Phipson, T. L. (Thomas Lamb), 1833 -1908 (L. Reeve & co, 1862)

Phosphorescence, or, The emission of light by minerals, plants, and animals - Phipson, T. L. (Thomas Lamb), 1833 -1908 (L. Reeve, 1862)

Phosphorescence; or, The emission of light by minerals, plants and animals - Phipson, Thomas Lamb, 1833 - (L. Reeve, 1870)

PHS news - Pennsylvania Horticultural Society. (The Society, 1995)

Phytochemie - Rochleder, Friedrich, 1819 -1874 (W. Engelmann, 1854)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1841)

Le piante fanerogame della Svissera insubrica : enumerate seconde il metodo decandolliano - Favrat, Louis, 1827 -1893 (H. Georg, 1890)

Le piante fanerogame della Svizzera insubrica : enumerate secondo il methodo decandolliano - Favrat, Louis, 1827 -1893 (H. Georg, 1890)

Pitzonka's high quality pansies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1949)

Pitzonka's high quality pansies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1950)

Pitzonka's high quality pansies, Pitzonka's three mixtures - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1948)

Pitzonka's pansies : fall 1952, spring 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1952)

Pitzonka's pansies : fall 1953, spring 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm and Nursery, 1953)

Pitzonka's pansies : fall 1955, spring 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm and Nursery, 1955)

Pitzonka's Pansies : fall 1957 - spring 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm and Nursery, 1957)

Pitzonka's Pansies : fall 1958 - spring 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm and Nursery, 1958)

Pitzonka's Pansy Farm, "The home of the pansy" : rock plants, bulbs, perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1933)

Pitzonka's quality pansies : fall 1950, spring 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1950)

Pitzonka's quality pansies : fall 1951, spring 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitzonka's Pansy Farm, 1951)

Plant-breeding; comments on the experiments of Nilsson and Burbank - Vries, Hugo de, 1848 -1935 (The Open Court Publishing Co, 1919)

Plant-breeding; comments on the experiments of Nilsson and Burbank - Vries, Hugo de, 1848 -1935 (Open Court Pub. Co, 1919)