The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1898)

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)

The practical gardener, and modern horticulturist - McIntosh, Charles, 1794 -1864 (T. Kelly, 1836)

A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conifers; hardy ferns; hardy bamboos and other ornamental grasses. Also the best kinds of fruits and vegetables that may be grown in the open air in the British Isles with full and practical instruction as to culture and propagation - Weathers, John, 1867 -1928 (Longmans, Green, 1901)

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

Price list 1907 for gardeners and owners of estates only : trees, shrubs, roses, vines herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Windsor H. Wyman, 1907)

Price list, 1931-1932 : native rhododendrons, azaleas, hemlocks, balsam laurel, leucothoe, myrtle, spruce and other broad-leafed evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Anthony Lake Nursery, 1931)

Price list, 1931 : rhododendron, azalea, hardy ferns and native plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wildwood Nurseries, 1931)

Price list, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wild Flowers (Inc.), 1932)

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

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

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

Price list, fall 1932–spring 1933 of hardy native mountain trees, shrubs, perennial wild flowers and ferns from the Blue Ridge Mountains of Western North Carolina - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mrs. J. H. Von Canon, 1932)

Price list for fall 1952 : hardy ferns, wild flowers, bulbs and native orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Johnson's Nurseries, 1952)

Price list for spring 1941 : native ornamental plants for pleasing landscape effect - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Blue Ridge Rhododendron Gardens, 1941)

Price list in effect from October, 1924 to October, 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Idle Hour Nurseries, 1924)

Price list in effect from October, 1925 to October, 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Idle Hour Nurseries, 1925)

Price list in effect from October, 1928 to October, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Idle Hour Nurseries, 1928)

Price list : Kelsey-Highlands Nursery : August, September and autumn, 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harlan P. Kelsey, 1927)

Price-list [of] fruit and ornamental trees, shrubs, vines, roses and herbaceous perennials : Spring 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (New England Nurseries, 1907)

Price list of hardy perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (United States Nurseries, 1891)

Price list : special wholesale price list of vines, climbers and creepers, ferns, aquatics and bog plants, orchids, lilies and bulbous plants, and herbaceous perennials, on advance orders for early autumn delivery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gardens of the Blue Ridge, 1921)

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

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

Principia botanica: or, a concise and easy introduction to the sexual botany of Linnaeus ... - Linné, Carl von, 1707 -1778 (Printed by Allin and co. and sold by G. G. J. and J. Robinson, London, 1787)

Principia botanica: or, A concise and easy introduction to the sexual botany of Linnaeus ... Arranged in a tabular form, under each class and order; and digested alphabetically under several generic distinctions. Together with three indexes ... Also a table of several vegetable drugs not in the indexes ... - Darwin, Robert Waring, 1724 -1816 (Printed and sold by M. Hage; [etc., etc.], 1810)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1893)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1920)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1868)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1876)

Proceedings of the annual convention of the society of American Florists - Society of American Florists; Ornamental Horticulturists. (Society of American Florists and Ornamental Horticulturalists, 1885)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1982)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1979)

Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1909)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1951)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1986)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1990)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1991)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1891)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1897)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1907)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1967)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1839)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1846)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1873)

Profits will be made by buyers of stock from this special fall list : August 20 to November 15, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1929)

Pronunciation of plant names - Garden Club of America. (Reproduced and printed by National Process Company], 1922)

Propositions de changements aux lois de la nomenclature botanique de 1867 : dont l'adoption est recommandée au Congrès international de nomenclature botanique projeté a Vienne en 1905 - Burnat, Émile, 1828 -1920 (Georg & Co, 1904)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1888)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1890)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1953)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1896)

Putney's 1955 garden book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Putney Nursery, 1955)

Quarterly - Women's National Agricultural; Horticultural Association. (Published quarterly for W.N.A. and H.A. by J.B. Haines, 1914)

Records of the Queen Victoria Museum Launceston - Queen Victoria Museum (Launceston, Tas.) (The Museum, 1968)

Reduction of all the genera of plants contained in the Catalogus plantarum Americæ septentrionalis, of the late Dr. Muhlenberg, to the natural families of Mr. de Jussieu's system : For the use of the gentlemen who attended the course of elementary and philosophical botany in Philadelphia, in 1815 - Correia da Serra, José Francisco, 1750 -1823 (Published by Solomon W. Conrad, no. 87, Market Street, 1815)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1843)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1844)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1846)

Report - Chicago Natural History Museum. (1915)

Report of the botanical exploration of southwestern Virginia during the season of 1892 - Small, John Kunkel, 1869 -1938 (1893)

Report of the Commissioner of Fisheries to the Secretary of Commerce and Labor for the fiscal year ended ... - United States. Bureau of Fisheries. (G.P.O, 1906)

Report of the Commissioner of Fisheries to the Secretary of Commerce and Labor for the fiscal year ended ... - United States. Bureau of Fisheries. (G.P.O, 1909)

Report of the Commissioner of Fisheries to the Secretary of Commerce and Labor for the fiscal year ended ... - United States. Bureau of Fisheries. (G.P.O, 1910)

Report of the geological exploration of the fortieth parallel - Eaton, Daniel Cady, 1834 -1895 (G.P.O, 1877)

Report on an examination of a forest tract in western North Carolina - Reed, Franklin W. (Franklin Weld) (U.S. Dept. of Agriculture, Bureau of Forestry, 1905)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1937)

Reports and papers on botany - Grisebach, A. (August), 1814 -1879 (Printed for the Ray society, 1846)

Researches on North American Acridiidae - Morse, Albert P. (Albert Pitts), 1863 -1936 (Carnegie Institution of Washington, 1904)

Researches on North American Acridiidæ - Morse, Albert P. (Albert Pitts), 1863 -1936 (Carnegie Institution of Washington, 1904)

Retail price list, 1932 : rhododendron, azalea, hardy ferns and native plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wildwood Nurseries, 1932)

Retail price list, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1935)

Retail price list, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1936)

Retail price list, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1939)

Revised checklist of New York State plants - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1997)

Revisio generum plantarum vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum, mit erläuterungen - Kuntze, Otto, 1843 -1907 (A. Felix [etc., etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1893)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1898)

Revue algologique - Muséum national d'histoire naturelle (France) (Museum national d'histoire naturelle, 1932)

Revue horticole (Librairie agricole de la maison rustique, 1883)

Revue horticole (Librairie agricole de la maison rustique, 1902)

Revue mycologique (Bureaux de la rédaction, 1894)

Rhododendrons, azaleas, specimen conifers, rare plants, 1936 : Carolina mountain flowers and hardy native American plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harlan P. Kelsey, Inc, 1936)

Rhododendrons : fall, 1929 spring, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1929)

Rhododendrons kalmia and other collected plants from the mountains of North Carolina and Virginia : price list no. 2 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Anderson, 1922)

Rhododendrons, kalmia and other plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1931)

Rhododendrons, kalmia and other plants : fall, 1930-spring, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Morris Nursery Company, 1930)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1919)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1936)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1937)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1941)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1953)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1965)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1981)

La Riforma della nomenclatura botanica trattata dal Congresso botanico internazionale di Genova 1892 - Underwood, Lucien Marcus, 1853 -1907 (Tip. Sordo-muti, 1892)

Robert Veitch & Son's catalogue of seeds and plants for spring 1899 : importers, growers and dealers in seeds, plants, bulbs and flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Robert Veitch & Son, 1899)

Robert Veitch & Son's catalogue of seeds and plants for spring 1898 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Robert Veitch & Son, 1898)

The rock garden - Jenkins, Edmund Howard, 1856 -1921 (Country life, ltd. [etc.], 1920)

Rock gardening for amateurs - Thomas, H. H. (Harry Higgott) (Cassell and company, limited, 1914)

Rock-gardens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1934)

Rock gardens: how to make and maintain them - Meredith, Lewis B. (Williams & Norgate, 1910)

Rock gardens; how to make and maintain them - Meredith, Lewis B. (C. Scribner's sons, 1914)

Rock plants & perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Logan Nurseries, 1930)

Rock plants and iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1937)

Rock plants and iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker Gardens, 1936)

Rock plants and perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Logan Nurseries, 1927)

Rock plants and perennials : 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Logan Nurseries, 1932)

Roehrs Nursery : at the sign of the tree - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Roehrs Co, 1917)

Roehrs Nursery : at the sign of the tree - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Roehrs Co, 1919)

Roehrs Nursery : at the sign of the tree : [catalog] - Roehrs, Julius, Company. (Julius Roehrs Co, 1917)

Rotunda - American Museum of Natural History (American Museum of Natural History, 1986)

The Royal botanic gardens, Kew : historical and descriptive - Bean, W. J. (William Jackson), 1863 -1947 (Cassell and Co., Ltd, 1908)

Rules and regulations of Bureau of Entomology and Plant Quarantine ... Effective June 1, 1938 - United States. Bureau of Entomology; Plant Quarantine. (U.S. Govt. Print. Off, 1939)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1866)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1867)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1870)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1871)