Opuscula philolichenum (J. Lendemer, 2008)

Opuscula philolichenum (J. Lendemer, 2011)

Opuscula philolichenum (J. Lendemer, 2012)

Opuscula philolichenum (J. Lendemer, 2013)

Opuscula philolichenum (J. Lendemer, 2014)

Opuscula philolichenum (J. Lendemer, 2016)

Opuscula philolichenum (J. Lendemer, 2017)

Opuscula philolichenum (J. Lendemer, 2018)

Opuscula philolichenum (J. Lendemer, 2019)

Opuscula philolichenum (J. Lendemer, 2020)

Opuscula philolichenum (J. Lendemer, 2021)

Orchard & garden book, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1944)

Orchard and garden book, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1936)

The orchids in the Ottawa District : floristics, phytogeography, population studies and historical review / Joyce M. Reddoch and Allan H. Reddoch - Ottawa Field-Naturalists' Club (The Ottawa Field-Naturalists' Club, 1997)

[Order forms] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Woodlot Seed Co, 1958)

Oregon flora newsletter - Oregon State University. Department of Botany; Plant Pathology. (Oregon Flora Project, Dept. of Botany & Plant Pathology, Oregon State University, 2010)

Organic materia medica and therapeutics : in accordance with the sixth revision of the United States Pharmacopoeia - Simpson, James Young, Sir, 1811 -1870 (J.H. Vail, 1885)

Organic materia medica : including the standard remedies of the leading pharmacopoeas as well as those articles of the newer materia medica ... and of the preparations made therefrom by Parke, Davis & Co. ... - Parke, Davis & Company ([s.n.], 1888)

The Original Barnes nursery, established 1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barnes Bros. Nursery Co, 1932)

The Original Barnes nursery, established 1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barnes Bros. Nursery Co, 1931)

Ornamental and fruit trees, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Wragg & Sons Co, 1907)

Ornamental and fruit trees, shrubs, roses, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Wragg & Sons Co, 1900)

Ornamental nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1908)

Ornamental nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1916)

Ornamental trees & plants : no. 2 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Maple Avenue Nurseries, 1901)

Ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thaddeus N. Yates & Co, 1910)

Ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thaddeus N. Yates & Co, 1915)

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 and shrubs price list : spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph B. Gable, 1930)

Ornamental trees, evergreens, windbreaks, fruits, shrubs : spring 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.V. Bailey Nurseries, 1947)

Ornamental trees, evergreens, windbreaks, fruits, shrubs : spring 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.V. Bailey Nurseries, 1948)

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 Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1895)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1898)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1899)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1906)

Our fiftieth year bargain list : (1878 to 1927) - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kelsey Nursery Service, 1927)

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, 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, 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, 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 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 form 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, by Clarence M. Weed - Weed, Clarence Moores, 1864 -1947 (J.B. Lippincott Company, 1918)

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 wild birds - Morris, Robert Oliver, 1846 -1925 (1901)

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)

Outlines of medical botany :comprising vegetable anatomy and physiology...and a glossary of terms - Reid, Hugo. (Maclachlan, Stewart & Co, 1896)

Painesville Nurseries : fruit and ornamental trees, shrubs, roses, seeds and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Storrs and Harrison Co, 1914)

Pamphlets on forestry in Canada (1900)

Pamphlets on forestry in Colorado (1900)

Pamphlets on forestry in Maine (1900)

Pamphlets on forestry in Massachusetts (1900)

Pamphlets on forestry in Michigan (1900)

Pamphlets on forestry in Minnesota (1900)

Pamphlets on forestry in Montana (1900)

Pamphlets on forestry in Nebraska (1900)

Pamphlets on forestry in New Jersey (1900)

Pamphlets on forestry in New York (1900)

Pamphlets on forestry in North Dakota and South Dakota (1900)

Pamphlets on forestry in Pennsylvania (1900)

Pamphlets on forestry in Tennessee (1900)

Pamphlets on silviculture (1899)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1925)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1964)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1996)

Papers from the Department of forest entomology - Osborn, Herbert 1856 -1954 (1922)

Papers from the Department of Forest Entomology - New York. College of Forestry, Syracuse. Dept. of Forest Entomology. (The University, 1922)