Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) - Leavitt, Robert Greenleaf, 1865 - (American Book Co, 1901)

Outlines of botany : taken chiefly from Smith's Introduction ... For the use of schools and students - Smith, James Edward, 1759 -1828 (Cummings and Hilliard for the author, 1819)

Outlines of British fungology; containing characters of above a thousand species of Fungi, and a complete list of all that have been described as natives of the British Isles - Berkeley, M. J. (Miles Joseph), 1803 -1889 (L. Reeve, 1860)

Outlines of classification and special morphology of plants - Goebel, K. (Karl), 1855 -1932 (Clarendon Press, 1887)

Outlines of classification and special morphology of plants - Balfour, Isaac Bayley, 1853 -1922 (Clarendon Press, 1887)

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

Outlines of the history of botany - Harvey-Gibson, R. J. (Robert John), 1860 -1929 (Black, 1919)

Outlines of the history of botany - Harvey-Gibson, R. J. (Robert John), 1860 -1929 (A.& C. Black, 1919)

Outlines of the natural history of Great Britain and Ireland, containing a systematic arrangement and concise description of all the animals, vegetables and fossiles which have hitherto been discovered in these kingdoms - Berkenhout, John, 1730 -1791 (Printed for P. Elmsly (Successor to Mr. Vaillant), 1769)

Outlines of the natural history of Great Britain and Ireland, containing a systematic arrangement and concise description of all the animals, vegetables and fossiles which have hitherto been discovered in these kingdoms - Berkenhout, John, 1730 -1791 (Printed for P. Elmsly (Successor to Mr. Vaillant), 1770)

Over de bevruchting der bloemen in het kempisch gedeelte van Vlaanderen - MacLeod, Julius, 1857 -1919 (Vuylsteke, 1894)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1894)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

Oxford gardens. Based upon Daubeny's Popular guide to the physick garden of Oxford : with notes on the gardens of the colleges and on the University Park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker, 1912)

Packaged bulbs : packaged roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Growers Exchange Inc, 1959)

Une page d'histoire de la medecine : la thérapeutique sous les premiers Césars - Lépine, R. (Raphael), 1840 -1919 (F. Alcan, 1890)

Pages from a garden note-book - King, Francis, Mrs., 1863 -1948 (Scribner, 1921)

Painesville Nurseries : fruit and ornamental trees, shrubs, roses, seeds and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Storrs and Harrison Co, 1914)

Pakro annual : a guide to better gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Seed and Seedtape Company, 1922)

Pakro garden guide : selected seeds, plants, and bulbs for your 1924 garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Seed and Seedtape Company], 1924)

Die palaearktischen tortriciden. Eine monographische darstellung mit 24 tafeln in farbendruck, einer stammtafel und mehreren abbildungen im text. Mit einer unterstützung des "Elizabeth-Thompson-science fund" in Boston bearb. von dr. J. Kennel - Kennel, Julius von, 1854 -1939 (E. Schweizerbart, 1921)

Palaeontographica (Theodor Fischer, 1859)

Palisades perennials and rock-garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1932)

Palisades perennials and rock-garden plants, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1931)

Palisades perennials and rock-garden plants, 1932 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1932)

Palisades perennials and rock-garden plants, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1934)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1914)

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, 1921)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1923)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1926)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1924)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1927)

Palisades popular perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries Inc, 1915)

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

Palisades popular perennials : rock-garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1930)

Palisades popular perennials : rock-garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1928)

Palisades popular perennials : rock-garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1929)

Palladin's Plant physiology - Hopping, Aleita, 1890 - (P. Blakiston's son, 1926)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1885)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1887)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1892)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1896)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1916)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1954)

Papers presented at the Celebration of the Twentieth Anniversary of the New York Botanical Garden, September 6-9, 1915. Published by the aid of the David Lydig Fund, bequethed by Charles P. Daly - New York Botanical Garden (1916)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1896)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1904)

Park's 1940 flower book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1940)

Park's book of autumn : hyacinths, tulips, narcissus, iris, peonies, daylilies, lilies, crocus, other bulbs, seed - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1947)

Park's book of autumn quality bulbs and seeds : fall 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1943)

Park's fall special : tulips, hyacinths, narcissus, crocus, peonies, iris : fall 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1938)

Park's flower book for autumn 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1956)

Park's flower book for autumn 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1957)

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

Park's flower book for autumn 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1959)

Park's flower book : season 1938, 70th anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1938)

Park's flower book : season 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1939)

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 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1933)

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 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1934)

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)

Part I. The living flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (Wheeling news litho. co, 1913)

Parte práctica de botánica del caballero Cárlos Linneo, que comprehende las clases, órdenes, géneros, especies y variedades de las plantas, con sus caracteres genéricos y especificos, sinónimos mas selectos, nombres triviales, lugares donde nacen, y propriedades - Linné, Carl von, 1707 -1778 (En la Imprenta Real, 1784)

The pathway to perennials leads straight to the Palisades Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Palisades Nurseries, Inc, 1916)

Patterson's numbered check-list of North American plants north of Mexico - Patterson, Harry N. (Harry Norton), 1853 -1919 (Patterson, 1892)

Paxton's Botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms. New ed. including all the new plants up to the present year - Paxton, Joseph, Sir, 1803 -1865 (Bradbury, Evans, & co, 1868)

Pennsylvania farm journal - Darlington, J. L. (A.M. Spangler, 1853)

Pennsylvania Nursery Company's general catalogue of nursery products in three parts - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pennsylvania Nursery Company, 1912)

Pennsylvania Nursery Company's general catalogue of nursery products in three parts - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pennsylvania Nursery Co, 1913)

Peonies and Iris - Peterson Nursery. (Peterson Nursery)

Peonies, bulbs and hardy plants - Babcock Peony Gardens. (Babcock, 1904)

Peonies for pleasure and profit : iris, phlox, and other perennials 1920 supplement to our spring catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.G. Harris, 1920)

Peonies for pleasure and profit, iris, phlox, and other perennials : 1920 supplement to our Spring catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.G. Harris, 1920)

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 and shrubs : 1925 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1925)

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 and shrubs : 1929 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1929)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1927 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1927)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1931 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1931)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1930 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlows & Stranger, Inc, 1930)

Peonies iris-lilies and fall bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shenandoah Nurseries, 1929)

Peonies, iris, phlox and other perennials. 1915-1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1915)

Peonies, iris, phlox and other perennials. 1916-1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1916)

Peonies, iris, phlox and other perennials. 1918-1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow & Sons, 1918)

Peonies, iris, phlox and other perennials : 1914-1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1914)

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)

Perennial flowers, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Northern Seed Company, 1941)

Perennial Nurseries, spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alva H. Smith, 1936)

Perennial Nurseries, spring 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alva H. Smith, 1937)

Perennial Nurseries, spring and fall 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alva H. Smith, 1940)

Perennial plants and shrubs, 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Springbrook Gardens, 1948)

Perennial plants [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Perennial Nurseries, 1930)

Perennial plants : catalog for spring 1941, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Perennial Nurseries, 1941)

Perennial plants : fall, 1938, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Co, 1938)

Perennial plants : fall catalog-1954, wholesale only : our 34th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Co, 1954)

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 from all over the world, rock plants and floral novelties : fall 1922-spring 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1922)

Perennial plants from all over the world, rock plants and floral novelties : fall 1923-spring 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1923)

Perennial plants from all over the world, rock plants and floral novelties : fall 1924-spring 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1924)

Perennial plants from all over the world, rock plants and floral novelties : fall 1927-spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1927)

Perennial plants from all over the world, rock plants and floral novelties : fall 1928 spring 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1928)

Perennial plants from all over the world, rock plants and floral novelties : fall 1930, spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1930)

Perennial plants from all over the world, rock plants and floral novelties : fall 1929, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1929)

Perennial plants from all over the world, rock plants and floral novelties : fall 1932 spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1932)

Perennial plants from all over the world, rock plants and floral novelties : fall 1925-spring 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1925)

Perennial plants from all over the world, rock plants and floral novelties : fall 1926-spring 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1926)

Perennial plants from all over the world, rock plants and floral novelties : fall, 1931 spring, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1931)

Perennial plants : spring 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Co, 1947)

Perennial plants : spring 1948, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Co, 1948)

Perennial plants : spring 1949, wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Co, 1949)

Perennial plants : spring catalog 1950, wholesale only : 30th anniversary edition - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Co, 1950)

Perennial plants : spring catalog 1951, wholesale only : our 31st year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Company, 1951)

Perennial plants : spring catalog 1952, wholesale only : our 32nd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Company, 1952)

Perennial plants : spring catalog 1953, wholesale only : our 33rd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Company, 1953)

Perennial plants : spring catalog 1954, our 34th year : wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Joseph F. Martin Company, 1954)

Perennial plants : wholesale only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Perennial Nurseries, 1934)

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

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

Perennials : deciduous trees, flowering shrubs, evergreens, hardy vines, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1924)

Perennials for all purposes : ground covers and hardy vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1920)

Perennials for rockgardens, hardy border and general plantings - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cottage Gardens, 1928)

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

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1940)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1941)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1939)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1938)

Perennials, rock plants, cut flowers, seedling annuals, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hildemere Gardens, 1936)

Perennials rockery plants : select – locally grown - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Beverley Bulb and Dahlia Farms, 1949)

Perennials : use hardy plants for winter forcing, for summer cutting, for landscaping, for potted plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph F. Martin Perennial Nurseries, 1929)

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

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)

Perkins' flower gardens, Vol. 2, No. 2, March 1934 : perennials, annuals for your garden and rockery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perkins Brothers, 1934)

Perry Seed Company, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1931)

Perry Seed Company, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1932)