Ornamental trees and plants for home grounds and other landscape gardening, fruit trees for commercial orchards and home gardens : No. 127 price list, fall 1927-spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz' Sons & Co, 1927)

Ornamental trees, evergreens, windbreaks, fruits, shrubs : spring 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.V. Bailey Nurseries, 1945)

Ornamental trees, plants, shrubs, vines, etc. : fruit trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Samuel C. Moon, 1896)

Ornamental trees, shrubs, and woody climbers - Macoun, W. T. (William Tyrrell), 1869 -1933 (Canada Dept. of Agriculture, 1927)

The Ornithologist and botanist ([J.E. Blain, 1892)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1902)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1907)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1908)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1909)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1910)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1913)

Our mountain garden - Thomas, Rose Fay, 1852 -1929 (E.P. Dutton & Co, 1915)

Our mountain garden - Thomas, Rose Fay, 1852 -1929 (E.P. Dutton, 1915)

Our native trees and how to identify them : a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1900)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1913)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1912)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1910)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1917)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Scribner, 1902)

Our northern shrubs and how to identify them : a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Charles Scribner's Sons, 1922)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1903)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1912)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Scribner, 1903)

Our trees. A popular account of the trees in the streets and gardens of Salem, and of the native trees of Essex County, Massachusetts, with the location of trees, and historical and botanical notes - Robinson, John, 1846 -1925 (Printed by N. A. Horton and Son, 1891)

Our trees, how to know them; photographs from nature - Weed, Clarence Moores, 1864 -1947 (Lippincott, 1936)

Our trees, how to know them: photographs from nature by Arthur I. Emerson, with a guide to their recognition at any season of the year and notes on their characteristics, distribution, and culture - Weed, Clarence Moores, 1864 -1947 (J.B. Lippincott, 1918)

Our wholesale list to the trade : August 10, 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Summit Nurseries, 1942)

Outdoor beauty for your home - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (C.M. Hobbs & Sons, 1928)

Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) - Leavitt, Robert Greenleaf, 1865 - (American Book Co, 1901)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

Palaeontographica (Theodor Fischer, 1846)

Pamphlets on forest protection (1900)

Pamphlets on forestry in Kansas (1900)

Pamphlets on forestry in Montana (1900)

Pamphlets on forestry in Nebraska (1900)

Pamphlets on forestry in Pennsylvania (1900)

Pamphlets on silviculture (1899)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1943)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1946)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1953)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1972)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1986)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1988)

Papilio - Edwards, Henry, 1827 -1891 (New York Entomological Club, 1883)

Parasitic fungi of Illinois. Part II, Erysipheae, Lév - Earle, F. S. (Franklin Sumner), 1856 -1929 (J.W. Franks & Sons, 1887)

Parasitic fungi of Illinois / by T.J. Burrill - Earle, F. S. (Franklin Sumner), 1856 -1929 (J. W. Franks, 1887)

The parasitic fungi of New Jersey - Schwarze, Carl Alois, 1886 - (New Jersey Agricultural Experiment Stations, 1917)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1896)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1907)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1911)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1916)

The Park Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Park Nurseries, 1927)

Park's 1944 flower book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1944)

Park's autumn list of bulbs, plants and seeds : autumn of 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1914)

Park's flower book : spring 1943, seventy-fifth Anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1943)

Parks : a manual of municipal and county parks compiled as a result of a nation-wide study of municipal and county parks conducted by the Playground and Recreation Association of America, in co-operation with the American Institute of Park Executives at the request of the National Conference on Outdoor Recreation - American Institute of Park Executives. (A.S. Barnes & Co, 1928)

The parks, promenades & gardens of Paris : described and considered in relation to the wants of our own cities and of public and private gardens - Robinson, W. (William), 1838 -1935 (John Murray, 1869)

The parks, promenades, & gardens of Paris, described and considered in relation to the wants of our own cities, and the public and private gardens - Robinson, W. (William), 1838 -1935 (J. Murray, 1869)

A partial list of plants available for various uses in general landscape planting - Taylor, Albert D. (Albert Davis), 1883 -1951 (A.D. Taylor, 1916)

Pathologische Pflanzenanatomie. In ihren Grundzügen - Küster, Ernst, 1874 -1953 (G. Fischer, 1916)

Paullinia : sapindacearum genus monographice descriptum = Monographie der Sapindaceengattung Paullinia - Radlkofer, L. (Ludwig), 1829 -1927 (K. B. Akademie, 1895)

Pehr Kalms Resa till Norra Amerika - Kalm, Pehr, 1716 -1779 (Tidnings & tryckeri-aktiebolagets tryckeri, 1904)

Pennsylvania bird life; a manual of the birds of Pennsylvania; treating especially of their food, from examinations of several thousand stomachs, made during all seasons of the year, with descriptions of the birds, their nests, eggs and habits - Warren, Benjamin Harry, 1858 -1926 (Penn'a., Pub by the author, 1892)

Pennsylvania trees - Illick, Joseph S. (Joseph Simon), 1884 -1967 (W.S. Ray, State Printer, 1914)

Pennsylvania trees - Illick, Joseph S. (Joseph Simon), 1884 -1967 (W. S. Ray, State Printer, 1915)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1923 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Newcomb & Gauss, 1923)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1924 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Newcomb & Gauss, 1924)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1925 issue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1925)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1929 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1929)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1928 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1928)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1931 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1931)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1927 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1927)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1926 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.C. Thurlow's Sons, Inc, 1926)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1934 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1934)

Peonies, hardy garden perennials, ornamental evergreens, shade trees, shrubs : 1936, superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cherry Hill Nurseries, 1936)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1935 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1935)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1930 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlows & Stranger, Inc, 1930)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1932 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlows and Stranger, Inc, 1932)

Peonies, hardy garden perennials, ornamental evergreens, shade trees and shrubs : 1933 issue superseding all previous issues - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thurlow's and Stranger, Inc, 1933)

Personal narrative of travels to the equinoctial regions of the New continent during the years 1799-1804 - Humboldt, Alexander von, 1769 -1859 (G. Bell, 1877)

Personal narrative of travels to the equinoctial regions of America, during the year 1799-1804 - Humboldt, Alexander von, 1769 -1859 (Bohn, 1852)

Personal narrative of travels to the equinoctial regions of America during the years 1799 - 1804 - Humboldt, Alexander von, 1769 -1859 (George Routledge, 1895)

Peterson Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. A. Peterson, 1904)

Die pflanzen-mischlinge : ein beitrag zur biologie der gewächse - Focke, Wilhelm Olbers, 1834 -1922 (Gebrüder Borntrager, 1881)

Das pflanzenphysiologische Praktikum : Anleitung zu pflanzenphysiologischen Untersuchungen für Studirende und Lehrer der Naturwissenschaften sowie der Medicin, Land- und Forstwirthschaft - Detmer, W. (Wilhelm), 1850 -1930 (G. Fischer, 1895)

Die Pflanzenstoffe, botanisch-systematisch bearbeitet ; chemische Bestandteile und Zusammensetzung der einzelnen Pflanzenarten, Rohstoffe und Produkte. Phanerogamen - Wehmer, C. (Carl), 1858 -1935 (G. Fischer, 1911)

Die Pflanzenwelt Norwegens. Ein Beitrag zur Natur- und Culturgeschichte Nord-Europas - Schübeler, F. C. (Frederik Christian), 1815 -1892 (A.W. Brögger, 1873)

Die Pflanzenwelt Norwegens : ein Beitrag zur Natur- und Culturgeschichte Nord-Europas - Schübeler, F. C. (Frederik Christian), 1815 -1892 (1873)

Pfund's dependable trees, shrubs, perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pfund Nursery Co, 1922)

Pharmaceutical botany - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (P. Blakiston's son & co, 1914)

Pharmaceutical botany - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (P. Blakiston's Son & Co, 1918)

Pharmaceutical botany; a text-book for students of pharmacy and science - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (P. Blakiston's son & co, 1920)

Pharmaceutical botany, with glossary of botanical terms - Youngken, Heber W. (Heber Wilkinson), 1885 -1963 (Blakiston, 1921)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1878)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1873)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1880)