PHS news - Pennsylvania Horticultural Society. (The Society, 1994)

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

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1998)

Phytoneuron (Guy L. Nesom, 2013)

Phytoneuron (Guy L. Nesom, 2014)

Le piante vascolari raccolte dal Rev. P.C. Silvestri nell'Hu-peh, durante gli anni 1904-1907 (e negli anni 1909, 1910) - Silvestri, Cipriano. (Pellas, 1911)

The pinetum: being a synopsis of all the coniferous plants at present known, with descriptins, history and synonyms, and a comprehensive systematic index - Gordon, George, 1806 -1879 (H. G. Bohn, 1875)

The pinetum: being a synopsis of all the coniferous plants at present known, with descriptions, history and synonyms, and a comprehensive systematic index - Gordon, George, 1806 -1879 (H.G. Bohn [etc.], 1880)

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. : 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 aristocrats of New England, 1849-1939, ninetieth anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1939)

Plant culture; a working hand-book of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Oliver, George W. (George Watson), 1858 -1923 (A. T. De La Mare Printing and Publishing Co., Ltd, 1909)

Plant culture; a working hand-book of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Oliver, George W. (George Watson), 1858 -1923 (A. T. De La Mare Printing and Publishing Co, 1912)

Plant culture; a working handbook of every day practice for all who grow flowering and ornamental plants in the garden and greenhouse - Oliver, George W. (George Watson), 1858 -1923 (A. T. De La Mare Printing and Publishing Co, 1900)

Plant explorations : ornamentals in the Netherlands, West Germany, and Belgium - Meyer, Frederick G. 1917 -2006 (Agricultural Research Service, U.S. Dept. of Agriculture, 1963)

Plant hardiness zone map - United States. Agricultural Research Service. (Govt. Print. Off, 1960)

Plant hardiness zone map - American Horticultural Society. (Agricultural Research Service, 1965)

Plant health care for woody ornamentals : a professional's guide to preventing and managing environmental stresses and pests - International Society of Arboriculture. (Cooperative Extension Service, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign, 1997)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1924)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1925)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1923)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1951)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1966)

Plant materials of decorative gardening; the woody plants - Trelease, William, 1857 -1945 (The author, 1921)

Plant responses to salinity : an indexed bibliography (Office of the Regional Administrator for Agricultural Research (Western Region), Science and Education Administration, U.S. Department of Agriculture, 1978)

Plantae quaedam niloticae : quas in itinere cum divo Adalberto libero barone de Barnim facto collegit Robertus Hartmann - Schweinfurth, Georg August, 1836 -1925 (G. Reimer, 1862)

Plantae Wilsonianae :an enumeration of the woody plants collected in western China for the Arnold arboretum of Harvard university during the years 1907, 1908, and 1910 - Sargent, Charles Sprague, 1841 -1927 (The University press, 1916)

Plantae Wilsonianae :an enumeration of the woody plants collected in western China for the Arnold arboretum of Harvard university during the years 1907, 1908, and 1910 - Sargent, Charles Sprague, 1841 -1927 (The University press, 1917)

Plantae Wilsonianae; an enumeration of the woody plants collected in western China for the Arnold arboretum of Harvard university during the years 1907, 1908, and 1910 - Sargent, Charles Sprague, 1841 -1927 (University Press, 1916)

Plantae Wilsonianae; an enumeration of the woody plants collected in western China for the Arnold arboretum of Harvard university during the years 1907, 1908, and 1910 - Sargent, Charles Sprague, 1841 -1927 (University Press, 1917)

Planting guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1942)

Planting guide. Catalog no. 33 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, 1956)

The planting guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Malmo & Co, 1931)

Planting guide for 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1944)

Planting guide for 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1945)

Planting guide for 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1946)

Planting guide for fall 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1947)

Planting guide for spring 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waynesboro Nurseries, Inc, 1947)

Plantland celebrates its 20th anniversary at Elsberry with a great money saving harvest sale - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (St. Louis Post-Dispatch, 1957)

Plantland's annual harvest sale! : continuing through September, October, November - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Forrest Keeling Nurseries, 1959)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1946)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1950)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1957)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1958)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1963)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1967)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1968)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1969)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1970)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1971)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1973)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1974)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1978)

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

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1983)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1984)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1985)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1991)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1992)

Plants for California landscapes : a catalog of drought tolerant plants - California. Department of Water Resources. (State of California, Resources Agency, Dept. of Water Resources, 1979)

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

Plants for Idaho gardens, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Petrie Landscape Nurseries, 1934)

Plants, their natural growth and ornamental treatment - Hulme, F. Edward (Frederick Edward), 1841 -1909 (Marcus Ward & Co, 1874)

Pollen - Edgeworth, Michael Pakenham, 1812 -1881 (Hardwicke & Bogue, 1877)

Pomona Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.E. Steele, 1912)

Pomona Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.E. Steele, 1910)

Popular deciduous and evergreen trees and shrubs, for planting in parks, gardens, cemetries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (American News Co, 1868)

Popular deciduous and evergreen trees and shrubs, for planting in parks, gardens, cemeteries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (G. E. Woodward, 1868)

Popular deciduous evergreen trees and shrubs, for planting in parks, gardens, cemetaries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (American News Co, 1868)

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

Porter-Walton's garden book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1949)

Practical foresty; a popular handbook on the rearing and growth of trees for profit or ornament - Webster, A. D. (Angus Duncan), 1855 -1931 (W. Rider, 1917)

Practical landscape gardening : the importance of careful planning, locating the house, arrangement of walks and drives, construction of walks and drives, lawns and terraces, how to plant a property, laying out a flower garden, architectural features of the garden, rose gardens and hardy borders, wild gardens and rock gardens, planting plans and planting lists - Cridland, Robert B. (A.T. De La Mare Company, inc, 1916)

Practical landscape gardening; the importance of careful planning, locating the house, arrangement of walks and drives, construction of walks and drives, lawns and terraces, how to plant a property, laying out a flower garden, architectural features of the garden, rose gardens and hardy borders, wild gardens and rock gardens, planting plans and planting lists - Cridland, Robert B. (A.T. De La Mare Company, inc, 1918)

Der praktische landschaftsgärtner. Eine anleitung zur anlegung oder verschönerung von gärten verschiedener grösse ... Mit anweisung zu einer zweckmässigen benützung des küchengartens, zu spargel- und artischokenpflanzung, champignons-zucht, gurken- and melonentreiberei u.s.w - Hertz, Wilhelm. (Hoffmann, 1840)

The preferred plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Petrie Landscape Nurseries, 1926)

The preferred stock for the trade : fall 1932-spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jackson & Perkins Company, 1932)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1904)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1906)

Price list - Eastern Nurseries. (Eastern Nurseries)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1907)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1908)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1909)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1910)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1911)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1912)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1914)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1915)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1916)

Price list. No. 16 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1926)

Price list. No. 11 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1921)

Price list. No. 15 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ashford Park Nurseries, 1925)

Price list. 1918-1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Conyers B. Fleu, Jr, 1918)

Price list. Fall 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1920)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wood-Howell Nurseries, Inc, 1940)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1942)

Price list, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1933)

Price list , 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1934)

Price list, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1934)

Price list, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1935)

Price list, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1936)

Price list, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1937)

Price list, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1938)

Price list, 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Outpost Nurseries, 1940)

Price list : 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1940)

Price list, 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hoyt Nurseries, 1943)

Price list, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Outpost Nurseries, 1944)

Price list, 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hoyt Nurseries, 1945)

Price list, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hoyt Nurseries, 1946)

Price list, 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oak Park Nurseries, 1948)

Price list, 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1950)

Price list, 1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1952)

Price list, 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1953)

Price list, 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Adams Nursery, Inc, 1954)

Price list, autumn 1938 spring 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Howell Nurseries, 1938)

Price list autumn of 1898 : American trees and tree seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1898)

Price list : complete landscape department : nursery stock of distinction - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nurseries, 1945)

Price list, F. 39 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1939)

Price list fall 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1923)

Price list, fall 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1924)

Price list : fall 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1924)

Price list, fall 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1925)

Price list : fall 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Framingham Nurseries, 1925)

Price list. fall 1925-spring 1926. No. 125 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz' Sons Company, 1925)

Price list, fall 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1926)

Price list : fall 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westcott Nursery Company, 1928)

Price list : fall, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westcott Nursery Company, 1929)

Price list, Fall 1929 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1929)

Price list : fall, 1930 and spring, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James H. Bowditch, 1930)