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

Pelargoniums, geraniums, fuchsias : retail catalogue for 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schmidt Nursery, 1947)

Peonies and irises, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Indian Spring Farms, Inc, 1929)

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

Peonies, bulbs, poppies and other specialties - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Co, 1930)

Peonies, bulbs, poppies and other specialties - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Cole Nursery Company, 1931)

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, irises, gladiolus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Indian Spring Farms, Inc, 1930)

Perch lake mounds, with notes on other New York mounds, and some accounts of Indian trails - Beauchamp, William Martin, 1830 -1925 (New York State Education Department, 1905)

Perspectives - Field Museum of Natural History. (The Museum, 1996)

Peru : Ere-Campuya-Algodón - Field Museum of Natural History. (The Field Museum, Science and Education, 2013)

Perú, Medio Putumayo-Algodón - Stotz, Douglas F. (Douglas Forrester), 1956 - (Field Museum of Natural History, 2016)

Peter Henderson's flower bulbs this fall - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1920)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1919)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1920)

The Phoenix Nursery Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Phoenix Nursery Co, 1912)

The Phoenix Nursery Company. Catalogue no. 3, 1913 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloomington Phoenix Nursery, 1913)

The Phoenix Nursery Company. Catalog no. 3 : [spring 1910] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloomington Phoenix Nursery, 1910)

The Phoenix Nursery Company. Catalogue no. 3, 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloomington Phoenix Nursery, 1915)

The Phoenix Nursery Company [catalogue] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Phoenix Nursery Company, 1911)

PHS news - Pennsylvania Horticultural Society. (The Society, 1970)

The phylogeny of certain Cerithiidæ - Columbia University. Geological Dept. (New York Academy of Sciences, 1910)

Phylogeny of the Echini, with a revision of Palaezoic species - Jackson, Robert Tracy, 1861 -1948 (Soc. Nat. Hist, 1912)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1990)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2012)

Phytoneuron (Guy L. Nesom, 2020)

Pictorial practical bulb growing; a concise guide to the culture of all the most important bulbous, tuberous, and allied plants - Wright, Horace J. (Horace John), 1868 -1925 (Cassell and company, limited, 1903)

Pinetum flowerbulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pinetum Gardens, 1925)

Pinetum narcissi special circular no. 2 : wholesale price list, January 1, 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pinetum Gardens, 1925)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1910)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1912)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1911)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1916)

P.J. Berckmans Co. : 1904 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1904)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1903)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1905)

P.J. Berckmans Co., Inc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1915)

P.J. Berckmans Co. Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1917)

P.J. Berckmans Co. Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1907)

P.J. Berckmans Co., Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1914)

P.J. Berckmans Co., Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1913)

P.J. Berckmans Co., Incorporated [catalog]. 1906-1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1906)

Plant breeding in relation to American pomology - Munson, W. M. (Welton Marks), 1866 -1910 (Maine Agricultural Experiment Station, 1906)

Plant bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenville Bulb Growers, 1939)

Plant bulbs! - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenville Bulb Growers, 1938)

Plant bulbs now! - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenville Bulb Growers, 1937)

Plant bulbs now for spring flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardenville Bulb Growers, 1936)

Plant diseases of international importance - Kumar, Jatinder (Prentice Hall, 1900)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1967)

Plant life - American Plant Life Society. (American Plant Life Society, 1952)

Plant life - American Plant Life Society. (American Plant Life Society, 1971)

Plant life - American Plant Life Society. (American Plant Life Society, 1973)

Plant life - American Plant Life Society. (American Plant Life Society, 1979)

Plant lists, Colombia - Smith, Herbert H. (Herbert Huntington), 1851 -1919 (1898)

Plant lists : Colombia, Costa Rica, and Venezuela - Pittier, Henri, 1857 -1950 (1888)

Plant lists : Venezuela - Pittier, Henri, 1857 -1950 (1917)

Plant spring-flowering bulbs this fall - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carroll Gardens, 1942)

To plant this fall for springtime bloom - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hovey & Co, 1934)

Plant this fall, trees, shrubs, fruits & flowers : Victory planters guide for fall - winter 1943 and spring 1944 - Harrison's Nurseries (Berlin, Md.) (Harrison Brothers, 1943)

Plant trees : 1923 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Evergreen Nursery, 1923)

Plant trees : 1924 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Evergreen Nursery, 1924)

Plantarum vascularium genera :secundum ordines naturales digesta eorumque differentiae et affinitates tabulis diagnostacis expositae - Weidmann. (Libraria Weidmannia, 1836)

Plantas Hartwegianas :imprimis mexicanas adjectis nonnullis Grahamianis enumerat novasque - Bentham, George, 1800 -1884 ([G. Pamplin,], 1839)

Planter's guide 1941 - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1941)

Planter's guide for 1939 : new low prices for superior strains true-to-name fruit trees small fruits strawberries and hi-quality ornamentals for farm, suburban and city planting - Harrison's Nurseries (Berlin, Md.) (Harrison's, 1939)

Planters' wholesale price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cedar Hill Nursery Company, 1900)

Planting guide and price list [of] nursery stock, seeds, fertilizers, sprays, bulbs : fall 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Malmo & Co, 1922)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1947)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1960)

Plants for Idaho gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Petrie Landscape Nurseries, 1932)

Plants, roses and bulbs for fall and winter blooming : fall, 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Good & Reese Company, 1916)

Platt's bulbs bring the glamour of spring to your garden! - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank S. Platt Co, 1939)

Polder Bros., growers of hardy bulbs : wholesale price list, 1927–season–1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Polder Bros, 1927)

Popular art : the films of George Roy Hill - Shores, Edward Francis, 1947 - (1977)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Press of Webb publishing co, 1912)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Webb, 1914)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Webb Pub. Co, 1917)

Popular fruit growing : prepared especially for beginners and as a text book for schools and colleges - Green, Samuel Bowdlear, 1859 -1910 (Webb Publishing Co, 1910)

Popular garden flowers; anemones: asters: begonias: carnations: chrysanthemums: crocuses: daffodils: dahlias: geraniums: gladioli: hollyhocks: hyacinths: irises: lilies: pansies: phloxes: primulas: sweet peas: stocks: tulips: roses &c - Wright, Walter P. (Walter Page), 1864 -1940 (G. Richards ltd, 1911)

Popular garden flowers : anemones, asters, begonias ... [et al.] - Wright, Walter P. (Walter Page), 1864 -1940 (Doubleday Page, 1911)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1885)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1886)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1887)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1888)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1889)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1890)

Popular gardening for town and country (Popular Gardening Pub. Co, 1888)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1891)

Popular science news, formerly Boston journal of chemistry. A popular illustrated monthly devoted to the progress in zoology, botany, mineralogy, archaeology, hygiene, invention, with related physical sciences and general scientific information - Agassiz Association. (J.R. Nichols & co. [etc.], 1866)

Portland Seed Company's autumn catalog [of] trees, roses, bulbs, plants : fall 1916-spring 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1916)

Portland Seed Company's autumn catalog [of] trees, roses, bulbs, plants : fall 1917-spring 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Co, 1917)

Portraits of celebrated racehorses of the past and present centuries : in strictly chronological order, commencing in 1702 and ending in 1870 together with their respective pedigrees and performance recorded in full - Taunton, Thomas Henry. (S. Low, Marston, Searle & Rivington, 1887)

Poultry fancier (Poultry Fancier Pub. Co, 1908)

Practical agriculture; a brief treatise on agriculture, horticulture, forestry, stock feeding, animal husbandry, and road building - Wilkinson, John W. (John Walter), 1869 - (American book company, 1909)

The practical nurseryman (W.F. Heikes, 1893)

The practical nurseryman and horticultural advertiser (W.F. Heikes, 1898)

Pre-season offering of finest flowering bulbs at pre-inflation prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Robert Wayman, 1933)

Pre-season special bulb list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Max Schling Seedsmen, Inc, 1939)

Precis Analytique des Travaux de l'Academie des Sciences, Belles-Lettres et Arts de Rouen - Académie des sciences, belles lettres & arts de Rouen (1812)

Preliminary bulletin : spring 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shenandoah Nurseries, 1921)

A preliminary verified list of plant collectors in Mexico - Knobloch, Irving W. (Irving William), 1907 - (Harold N. Moldenke and Alma L. Moldenke, 1983)

Price catalogue season 1909-1910 : fruit and ornamental trees, evergreens, palms, roses - Roeding, George Christian, 1868 -1928 (Geo. C. Roeding, 1909)

[Price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Denver Nursery Co, 1915)

[Price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.M. Burnett & Sons, 1917)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.J. Weber & Sons Nursery Co, 1904)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.J. Weber & Sons Nursery Co, 1905)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1892)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1891)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1893)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lankford Nursery, 1926)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Noble Nursery, 1921)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Noble Nursery, 1922)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Noble Nursery, 1923)

Price list. Fall 1918 and spring 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1918)

Price list 1904, Highland Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eug. L. Hollard & Son, 1904)

Price list - 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Steuk Grape-Vine Nursery, 1950)

Price list - 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Steuk Grape-Vine Nursery, 1951)

Price list and descriptive catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1902)

Price list and descriptive catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1900)

Price list and descriptive catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1899)

Price list and descriptive catalogue of F. Barteldes & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1894)

Price list and descriptive catalogue of F. Barteldes & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kansas Seed House, 1898)

Price list and descriptive catalogue of F. Barteldes & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1895)

Price list and descriptive catalogue of F. Barteldes & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1896)