Practical guide to the wild flowers and fruits - Walton, George Lincoln, 1854 -1941 (Lippincott, 1909)

A practical handbook of trees, shrubs, vines and herbaceous perennials - Kirkegaard, John (The Bullard company, 1912)

A practical handbook of trees, shrubs, vines and herbaceous perennials. Hardy and ornamental varieties, their characteristics, uses and treatment - Kirkegaard, John (Williams Bookstores Co, 1916)

A practical handbook of trees, shrubs, vines and herbaceous perennials - Kirkegaard, John (Williams Bookstores Co, 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, 1916)

Practical plant propagation; an exposition of the art and science of increasing plants as practiced by the nurseryman, florist and gardener - Hottes, Alfred Carl, 1891 -1955 (A. T. De La Mare company, inc, 1922)

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

A preliminary catalogue of the flora of New Jersey - Britton, Nathaniel Lord, 1859 -1934 (Office of the Survey, 1881)

Preliminary catalogue of the flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (1892)

A preliminary list of the vascular flora of Allegheny County, Pennsylvania - Shafer, John Adolph, 1863 -1918 (Carnegie Institute Museum?, 1901)

A preliminary list of the vascular plants of the Lackawanna and Wyoming valleys - Dudley, William Russel, 1849 -1911 (The Republican Press, 1887)

The preservation and management of vegetation in ravines in Highland Park, Illinois : a report - Illinois. Natural History Survey Division (The Survey, 1977)

Price list - Eastern Nurseries. (Eastern Nurseries, 1908)

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

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

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

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. (Westcroft Gardens, 1928)

Price-list, 1910 of native ferns, wild flower and shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Irving Holcomb, 1910)

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. (Princeton Nurseries, 1934)

Price list, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upper Bank Nurseries, 1941)

Price list, 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John M. Eisler Nurseries, 1942)

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

Price list, 1943–1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harlan P. Kelsey, Inc, 1943)

Price list, 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John M. Eisler Nurseries, 1948)

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 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, 1915-spring, 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry S. Dawson, 1915)

Price list fall 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1922)

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

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

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-spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1929)

Price list : fall 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1931)

Price list, fall 1931 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1931)

Price list, fall 1932 - spring 1933 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1932)

Price list, fall 1934 - spring 1935 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1934)

Price list, fall 1935 spring 1936 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1935)

Price list, fall 1936 spring 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Howell Nurseries, 1936)

Price list, fall 1936 spring 1937 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1936)

Price list, fall 1937, spring 1938 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1937)

Price list, fall 1938, spring 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1938)

Price list, fall 1939, spring 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1939)

Price list : fall, 1940-spring, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1940)

Price list : fall, 1941-spring, 1942 : trees, shrubs, evergreens, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1941)

Price list, fall 1942–spring 1943 : trees, shrubs, evergreens, herbaceous perennials, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1942)

Price list, fall 1943–spring 1944 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1943)

Price list, fall 1944–spring 1945 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1944)

Price list, fall 1945–spring 1946 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1945)

Price list, fall 1946–spring 1947 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1946)

Price list, fall 1947–spring 1948 : trees, shrubs, evergreens, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1947)

Price list, fall 1948–spring 1949 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1948)

Price list, fall 1949–spring 1950 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1949)

Price list, fall 1950–spring 1951 : roses, evergreens, trees, shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1950)

Price list, fall 1951, spring 1952 : roses, evergreens, Herbaceous perennials, shrubs, trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1951)

Price list, fall 1952, spring 1953 : trees, shrubs, roses, evergreens, Herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1952)

Price list, fall, 1953, spring, 1954 : shrubs, trees, Herbaceous perennials, roses, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1953)

Price list, fall, 1954, spring, 1955 : evergreens, shrubs, trees, herbaceous perennials, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1954)

Price-list for 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1920)

Price list no. 10 : evergreens, trees, rhododendrons and azaleas, shrubs, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Vorndran Nursery, 1940)

Price list no. 11 : evergreens, trees, rhododendrons and azaleas, shrubs, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Vorndran Nursery, 1941)

Price list, No. 130 : fall 1928-spring 1929, 82nd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1928)

Price list no. 18 : evergreens, trees, rhododendrons and azaleas, shrubs, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Vorndran Nursery, 1949)

Price list no. 18 : evergreens, trees, rhododendrons and azaleas, shrubs, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (August Vorndran Nursery, 1946)

Price list no. 3 : a distinctive selection of quality nursery stock, plants, seeds and garden supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chase-Pitkin Nurseries, Incorporated, 1943)

Price list no. 73 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littleford Nurseries Co, 1925)

Price list No. 75 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littleford Nurseries Co, 1926)

Price list [of] american tree and shrub seeds : Autumn 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1907)

Price list [of] evergreen, tree, shrub seeds : crops of 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Conyers B. Fleu, Jr, 1930)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1908)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1904)

Price-list of hardy ornamental trees, hardy flowering shrubs, evergreens, roses, bulbs, herbaceous plants, fruits, etc. for parks, cemeteries, gardens and all public and private grounds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1910)

Price list of seeds of conifers, forest and ornamental trees, shrubs, palms, fruit trees and roots and seeds of medicinal plants No. 50 season 1929-1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Otto Katzenstein & Co, 1929)

Price list of seeds of conifers, forest and ornamental trees, shrubs, palms, fruit trees and roots and seeds of medicinal plants No. 46 season 1927-1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Otto Katzenstein & Co, 1927)

Price list of seeds of trees, shrubs and fruits - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1904)

Price list of seeds of trees, shrubs and fruits, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, Inc, 1906)

Price list of seeds of trees, shrubs and fruits, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, Inc, 1909)

Price list of seeds of trees, shrubs and fruits, etc. : Season 1904-5 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, Inc, 1905)

Price list of seeds of trees, shrubs and fruits, etc. : Season 1907-8 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, Inc, 1908)

Price list of specimen trees, shrubs, roses and fruit : fall 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1907)

Price list of specimen trees, shrubs, roses and fruit : fall 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1909)

Price list of specimen trees, shrubs, roses and fruit : fall 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1911)

Price list of specimen trees, shrubs, roses and fruit : fall 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1910)

Price list of specimen trees, shrubs, roses and fruit : fall 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1908)

Price list of specimen trees, shrubs, roses and fruit : spring 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1910)

Price list of specimen trees, shrubs, roses and fruit : spring 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1909)

Price list of specimen trees, shrubs, roses and fruit : spring 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1907)

Price list of specimen trees, shrubs, roses and fruit : spring 1908 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1908)

Price list of specimen trees, shrubs, roses and fruit : spring 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Andorra Nurseries, 1911)

Price list of the American Nursery Company - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Co, 1923)

Price list of the American Nursery Company - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Co, 1927)

Price list of the American Nursery Company - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (American Nursery Co, 1926)

Price list of the Bloodgood Nurseries, dept. of American Nursery Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloodgood Nurseries, 1924)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1915)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1916)

Price list of trees, shrubs and plants grown and handled "the Andorra way" : spring 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1914)

Price list of trees, shrubs, plants and evergreens Spring 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1919)

Price list of trees, shrubs, plants and evergreens : spring 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1918)

Price list of young ornamental trees and shrubs for planting in nursery rows : last call, March 15, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas B. Meehan Co, 1941)

Price list of young ornamental trees, shrubs and vines for planting in nursery rows - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas Meehan & Sons, 1914)

Price list : Offer No. 60, December 6th, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Herbst Brothers, inc, 1930)

Price list : ornamental trees, shrubs and vines for planting in nursery rows - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas J. Lane, 1917)

Price list spring 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1921)

Price list spring 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1922)

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

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

Price list, spring 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1929)

Price list, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1930)

Price list : spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1931)

Price list, spring 1931 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1931)

Price list : spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1932)

Price list, spring 1932 : trees, shrubs, evergreens, vines, roses, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Kohankie & Son, 1932)

Price list, spring 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1934)

Price list, spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1936)

Price list, spring 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, Incorporated, 1937)

Price list, spring 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1941)

Price list : spring 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oak Park Nurseries, 1947)

Price list to the trade : fall 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1934)

Price list to the trade : fall 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1935)

Price list to the trade : fall 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1936)

Price list to the trade : spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1932)

Price list to the trade : spring 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1934)

Price list to the trade : spring 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cole Nursery Company, 1935)

The primeval forest types of southwestern New York - Gordon, Robert B. (Robert Benson), 1901 -1981 (University of the State of New York, 1940)

Princeton handbook [price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1931)

Princeton Nurseries, Princeton, New Jersey, commemorating Washington Bicentennial, 1732-1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1932)

Princeton nurseries : retail price list, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Flemer's Sons], 1938)

The principles of botany, and of vegetable physiology - Willdenow, Karl Ludwig, 1765 -1812 (Printed at the University Press, for William Blackwood, 1805)

Proceedings - Nova Scotian Institute of Science. (1866)

The Proceedings and transactions of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1894)

Proceedings commemorative of the centennial anniversary of the first occupation of the hall of the society, November 21, 1889 - American Philosophical Society. (The society, 1890)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1888)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1900)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1891)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1935)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1965)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1966)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1987)