The plants of Prince Edward Island - Erskine, D. S. (David Sterling) (Research Branch, Agriculture Canada, 1985)

The plants of Prospect Park - Jelliffe, Smith Ely, 1866 -1945 (1890)

Plants of Riding Mountain National Park, Manitoba - Canadian Parks Service. (Research Branch, Agriculture Canada, 1988)

The plants of Southern New Jersey with especial reference to the flora of the pine barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

The plants of Southern New Jersey; with especial reference to the flora of the Pine Barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

Plants of the summit of Mt. Marcy - Peck, Charles H. (Charles Horton), 1833 -1917 (Weed, Parsons, 1880)

Plants of Westford, Massachusetts : Herbarium of Emily F. Fletcher - Fletcher, Emily Frances, 1845 -1923

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (Univ. Press, 1917)

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (University Press, 1917)

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (University press, 1917)

Plantsman - New Hampshire Plant Growers' Association. (1990)

Poatkowé rostlinoslowí - Presl, Jan Svatopluk, 1791 -1849 (W kommissí u Kronbergra a iwnáe, 1848)

Poisonous plants of all countries - Bernhard-Smith, Arthur. (Baillière, Tindall & Cox, 1923)

The Polyporaceae of Wisconsin - Neuman, Julius John. (The State, 1914)

Pomologische Monotshefte - Lucas, Eduard, 1816 -1882 (E. Ulmer, 1874)

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

Populäre Botanik oder gemeinfassliche Anleitung zum Studium der Pflanze und des Pflanzenreiches. Zugleich ein Handbuch zum Bestimmen der Pflanzen auf Excursionen - Schmidlin, Eduard, 1808? -1890 (Krais & Hoffmann, 1857)

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)

Postglacial vegetational changes along an elevational gradient in the Adirondack Mountains (New York) : a study of plant macrofossils - Biological Survey (N.Y.) (University of the State of New York, State Education Dept., New York State Museum, Biological Survey, 1989)

Posthumous papers bequeathed to the honorable the East India company, and printed by order of the government of Bengal ... - Griffith, William, 1810 -1845 (Bishop's College Press, 1854)

Potter's cyclopaedia of botanical drugs and preparations - Holmes, E. M. (Edward Morell), 1843 -1930 (Potter & Clarke, 1915)

Potter's cyclopedia of botanical drugs and preparations - Wren, R. C. (Richard Cranfield), 1864 -1931 (Potter & Clarke, 1900)

Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1884)

Practical agriculture - James, C. C. (Charles Canniff), 1863 -1916 (D. Appleton, 1899)

Practical arboriculture; how forests influence climate, control the winds, prevent floods, sustain national prosperity, a text book for railway engineers, manufacturers, lumbermen and farmers - Brown, John Pinkney, 1842 -1915 ([Hennebery Press], 1906)

Practical botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn and company, 1911)

Practical botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn, 1911)

Practical botany, structural and systematic, the latter portion being an analytical key to the wild flowering plants, trees, shrubs, ordinary herbs, sedges and grasses of the northern and middle United States east of the Mississippi - Koehler, August (H. Holt and Company, 1876)

A practical flora for schools and colleges - Willis, Oliver R. (Oliver Rivington), 1815 -1902 (American Book Co, 1894)

Practical forestry - Mattoon, Wilbur R. (Wilbur Reed), 1875 -1941 (Connecticut Forest and Park Association, 1939)

Practical forestry for beginners in forestry, agricultural students, woodland owners, and others desiring a general knowledge of the nature of the art - Gifford, John C. (John Clayton), 1870 -1949 (D. Appleton, 1902)

Practical forestry for beginners in forestry, agricultural students, woodland owners, and others desiring a general knowledge of the nature of the art - Gifford, John C. (John Clayton), 1870 -1949 (D. Appleton and company, 1902)

The practical fruit, flower and vegetable gardener's companion, with a calendar - Emerson, G. (Gouverneur), 1796 -1874 (C. M. Saxton & co, 1855)

The practical fruit, flower and vegetable gardener's companion, with a calendar - Pardee, R. G. (Richard Gay), 1811 -1869 (C. M. Saxton and co, 1855)

The practical fruit, flower and vegetable gardener's companion with calendar - Pardee, R. G. (Richard Gay), 1811 -1869 (C.M. Saxton and Co, 1855)

Practical hints on planting ornamental trees, with particular reference to coniferae... - Noble, Charles, Nurseryman, (Bradbury and Evans, 1852)

Practical landscape gardening : with reference to the improvement of rural residences, giving the general principles of the art : with full directions for planting shade trees, shrubbery and flowers, and laying out grounds - Kern, G. M. (Moore, Wilstach, Keys & Co., No. 25 West Fourth Street, 1855)

Practical landscape gardening, with reference to the improvement of rural residences, giving the general principles of art; with full directions for planting shade trees, shrubbery and flowers, and laying out grounds - Kern, G. M. (Moore, Wilstach, Keys & co, 1855)

Practical landscape gardening, with reference to the improvement of rural residences, giving the general principles of the art; with full directions for planting shade trees, shrubbery and flowers, and laying out grounds - Kern, G. M. (Moore, Wilstach, Keys & co, 1855)

Practical plant physiology : an introduction to original research for students and teachers of natural science, medicine, agriculture and forestry - Detmer, W. (Wilhelm), 1850 -1930 (Swan Sonnenschein, 1898)

Practical plant physiology : an introduction to original research for students and teachers of natural science, medicine, agriculture and forestry - Detmer, W. (Wilhelm), 1850 -1930 (S. Sonnenschein, 1898)

Predicting the effect of fire on large-scale vegetation patterns in North America - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1996)

The preferred stock for the trade : fall 1929 spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jackson & Perkins Company, 1929)

The preferred stock for the trade : fall 1931 - spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jackson & Perkins Company, 1931)

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

Prehistoric Europe : a geological sketch - Darwin, Charles, 1809 -1882 (Edward Stanford, 1881)

Prehistoric Europe, a geological sketch - Geikie, James, 1839 -1915 (E. Stanford, 1881)

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 Maine fungi - Ricker, Percy Leroy, 1878 -1973 (1902)

Preliminary list of the mammals of New York - Miller, Gerrit S. Jr. (Gerrit Smith), 1869 -1956 (University of the State of New York, 1899)

A preliminary list of the plants of New Brunswick - Fowler, James, 1829 -1923 (Ellis, Robertson & Co, 1885)

Preliminary study of forest conditions in Tennessee - Hall, R. Clifford. (McQuiddy printing company, 1910)

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

Preservative treatment of poles - Kempfer, William Herbert. (Govt. print. off, 1911)

Price 1952 list : evergreens, shade trees, flowering shrubs, hedges, fruit trees, roses, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eisler Nurseries, 1952)

Price list - American Forestry Co. (American Forestry Co, 1915)

Price list - American Forestry Co. (American Forestry Co, 1916)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Herbst Brothers, inc, 1930)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James Krewson & Sons, 1924)

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

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. No. 108 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greening Nursery Company, 1958)

Price list. Number Ninety-eight - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greening Nursery Company, 1948)

Price list. Number Ninety-seven - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Greening Nursery Company, 1947)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1918)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1951)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Millane Nurseries and Tree Experts, Inc, 1940)

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

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

Price list : 1917-1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cottage Gardens Nurseries (Incorporated), 1917)

Price list 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1928)

Price list : 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Evergreen Nurseries of Berlin, Penna, 1929)

Price list , 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1929)

Price list : 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Evergreen Nurseries of Berlin, Penna, 1930)

Price list , 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1930)

Price list : 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Evergreen Nurseries of Berlin, Penn'a, 1932)

Price list - 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cass River Nurseries, 1932)

Price-list, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stephen Hoyt's Sons Co., Inc, 1933)

Price list 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Corliss Bros., Incorporated, Nurseries, 1933)

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

Price list, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roland E. Baker, 1934)

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. (Corliss Bros., Incorporated, 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. (Living Tree Guild, 1935)

Price list 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Corliss Bros., Incorporated, Nurseries, 1935)

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

Price list, 1935, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1935)

Price list, 1935 : ornamental nursery stock of all kinds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cass River 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. (New England Nurseries, 1937)

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, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1938)

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

Price list, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1939)

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

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

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

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

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

Price list 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.H. Schmidt & Son, Incorporated, 1941)

Price list, 1943–1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wood-Howell Nurseries, Inc, 1943)

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

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

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, 1947-1948, fifty-eighth year / F.A. Guernsey & Co., Inc. ; the Schoharie Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.A. Guernsey & Co., Inc, 1947)

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

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

Price list, 1949 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mission Gardens, 1949)

Price list, 1949 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John M. Eisler Nurseries, 1949)

Price list 1949 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bagatelle Nursery, 1949)

Price list ... 1949-1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tankard Nurseries, 1949)

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

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

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

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

Price list 1953 : evergreens, shade trees, flowering shrubs, hedges, fruit trees, roses, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eisler Nurseries, 1953)

Price list 1954 : evergreens, shade trees, flowering shrubs, hedges, fruit trees, roses, vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eisler Nurseries, 1954)

Price list and condensed catalogue : 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Columbia & Okanogan Nursery Company, 1942)

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

Price list and descriptive catalogue of Barteldes & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. Barteldes & Co, 1897)

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. (F. Barteldes & Co, 1896)

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, 1893)

Price list : autumn 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westcott Nursery Co, 1926)

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

Price list. choice trees, evergreens, shrubs, vines, roses, etc. 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elm City Nursery Co, 1919)

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

Price list : Dec. 1st, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1934)

Price list effective December 10, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Terrell's Aquatic Farms & Nurseries, 1930)

Price list effective March 15, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Terrell's Aquatic Farms and Nurseries, 1929)

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

Price list : fall & spring 1951-1952 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Nepco Lake Nursery, 1951)

Price list : Fall, 1920-Spring, 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hiti Nurseries, 1920)

Price list : Fall, 1921-Spring, 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hiti Nurseries, 1921)

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

Price list fall 1922-1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hogansville Nurseries, 1922)