Studies on Rocky Mountain flora - Rydberg, Per Axel, 1860 -1931 (New York Botanical Garden, 1904)

A study of the physiographic ecology of Mount Ktaadn, Maine - Harvey, Le Roy Harris. (1903)

A study of the vegetation of southeastern Washington and adjacent Idaho - Weaver, John E. (John Ernest),‏ ‎ 1884 -1966 (1917)

A study of two species of gulls, Larus Californicus and L. Delawarensis, breeding in an inland habitat - Vermeer, Kees (1967)

Styer's Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. J. Styer & Son, 1936)

Suburban gardens - Tabor, Grace, 1873? - (Outing publishing company, 1913)

Suggestions for effective planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Warner Harper, 1917)

A summary of research at the Manitou Experimental Forest in Colorado, 1937-1983 - Gary, Howard L. (1985)

A summary of the prevalence of plant diseases in the Dominion of Canada, 1920-1924 - Canada. Department of Agriculture. (F.A. Acland, Printer to the King's Most Excellent Majesty, 1926)

A supplement to F. Hamilton Davey's Flora of Cornwall - Thurston, Edgar, 1855 -1935 (Oscar Blackford, Royal Printeries, 1922)

Supplementary catalog of ornamental nursery stock : hardy trees, shrubs and flowering plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1905)

Surplus list and lining-out stock : 1930 spring list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William C. Schwartz Nurseries, 1930)

Surplus list and lining out stock : fall 1930, spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William C. Schwartz Nurseries, 1930)

Surplus offer : April 25, 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harlan P. Kelsey, 1923)

Survey and analysis of plant community types of Writing-on-Stone Provincial Park : final report - Alberta. Alberta Sustainable Resource Development. (The Company, 2004)

Survey for sensitive plant species on Dutchman Mountain, Beaverhead County - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1994)

Survey of Cypripedium calceolus, U.S.D.I. Bureau of Land Management, Butte District, Garnet Resource Area, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1992)

Survey of rare vascular plants in Fidler-Greywillow Wildland Provincial Park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Survey of rare vascular plants in La Butte Creek wildland provincial park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1910)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1923)

Swan River Nursery, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1935)

Swan River Nursery, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1937)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1897)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1898)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1980)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1981)

Sylvan Ontario : a guide to our native trees and shrubs - Muldrew, W. H. (William Hawthorne), 1867 -1904 (W. Briggs, 1901)

Synopsis plantarum; seu, Enumeratio systematica plantarum plerumque adhuc cognitarum cum differentiis specificis et synonymis selectis ad modum Persoonii elaborata - Dietrich, David Nathanael Friedrich, 1800 -1888 (B. F. Voigtii, 1839)

A taxonomic classification system for Montana riparian vegetation types : an interagency approach to classifying Montana's riparian ecosystems - Batchelor, Ronald F. (Montana Rural Area Development Committee, Wildlife Subcommittee, Riparian Program Team, 1982)

Technical publication - New York State College of Forestry at Syracuse University. (The College, 1914)

Technical series / Bureau of Entomology United States Department of Agriculture - United States. Bureau of Entomology. (Govt. print. off, 1911)

The Tennessee flora; with special reference to the flora of Nashville. Phaenogams and vascular cryptogams - Gattinger, Augustin, 1825 -1903 (The author, 1887)

Természetrajzi Füzetek kiadja a Magyar nemzeti Muzeum - Magyar Nemzeti Múzeum. (Franklin-társulat nyomdája [etc.], 1882)

A text-book of botany and pharmacognosy, intended for the use of students of pharmacy, as a reference book for pharmacists, and as a handbook for food and drug analysts - Kraemer, Henry, 1868 -1924 (Lippincott, 1907)

A text-book of botany and pharmacognosy : intended for the use of students of pharmacy, as a reference book for pharmacists, and a handbook for food and drug analysts - Kraemer, Henry, 1868 -1924 (J. B. Lippincott company, 1910)

A textbook of botany for colleges and universities - Coulter, John Merle, 1851 -1928 (American book company, 1911)

A textbook of botany for colleges and universities - Coulter, John Merle, 1851 -1928 (Amer. Bk. Co, 1910)

A textbook of botany for colleges and universities - Coulter, John Merle, 1851 -1928 (American book company, 1910)

Textbook of landscape gardening, designed especially for the use of non-professional students - Waugh, F. A. (Frank Albert), 1869 -1943 (John Wiley & Sons, inc.; [etc., etc.], 1922)

Textbook of landscape gardening, designed especially for the use of non-professional students - Waugh, F. A. (Frank Albert), 1869 -1943 (John Wiley & sons, inc.; [etc., etc.], 1922)

The journal of horticulture (1901)

Titus Nursery Company, Waynesboro, Virginia, growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Titus Nursery Co, 1927)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1907)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1914)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1920)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1932)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1934)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1935)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1941)

Torreya - Torrey Botanical Club. (Torrey Botanical Club, 1942)

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

Towson Nurseries Inc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Towson Nurseries, 1933)

Towson Nurseries, Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Towson Nurseries, 1928)

Towson Nurseries, Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Towson Nurseries, 1930)

Towson Nurseries, Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Towson Nurseries, 1925)

Trade catalogue of American plants and shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. F. Bassett & Son, 1897)

Trade catalogue of the Framingham Nurseries - Framingham Nurseries. (W.B. Whittier & Co, 1911)

Trade list Fall 1904 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nursery, 1904)

Trade list : fall 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1925)

Trade list of American plants and shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. F. Bassett & Son, 1901)

Trade list of American plants and shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. F. Bassett & Son, 1902)

Trade list [of] Old Colony Nursery : Spring 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Old Colony Nurseries, 1909)

Trade list : Old Colony Nursery fall, 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1906)

Trade list : Old Colony Nursery spring 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (T.R. Watson, 1906)

Trade list : spring, 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Thomas B. Meehan Co, 1922)

Trade list : spring 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F. & F. Nurseries, 1928)

Trade price list : April 1, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1929)

Trade price list : fall 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1928)

Trade price list : fall 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1930)

Trade price list : fall 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1931)

Trade price list : fall 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.D. Robinson, 1939)

Trade price list for spring 1923 for nurserymen and dealers only - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1923)

Trade price list : January 28, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Jenkins & Son, 1929)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1969)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1983)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1999)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2006)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2012)

Trail & landscape - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2019)

Traité des arbres & arbrisseaux, forestiers, industriels et d'ornement, cultivés ou exploités en Europe et plus particulièrement en France, donnant la description et l'utilisation de plus de 2400 espèces et 2000 variètès - Mouillefert, P. (Pierre), 1846 -1903 (Librairie des sciences naturelles, 1898)

Transactions - American Microscopical Society (1879)

Transactions and proceedings - Botanical Society Of Pennsylvania, Philadelphia. (University of Pennsylvania, 1911)

Transactions of the Academy of Science of St. Louis - Academy of Science of St. Louis. (Academy of Science of St. Louis], 1892)

Transactions of the American Entomological Society - American Entomological Society. (The Society at the Academy of Natural Sciences, 1893)

Transactions of the American Philosophical Society - American Philosophical Society. (1863)

Transactions of the ... annual meetings of the Kansas Academy of Science - Kansas Academy of Science. Meeting. (Kansas Pub. House, 1891)

Transactions of the ... annual meetings of the Kansas Academy of Science - Kansas Academy of Science. Meeting. (Kansas Pub. House, 1895)

Transactions of the Connecticut Academy of Arts and Sciences - Connecticut Academy of Arts; Sciences. (Published by the Academy, 1916)

Transactions of the Connecticut Academy of Arts and Sciences - Connecticut Academy of Arts; Sciences. (Published by the Academy, 1917)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1912)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1917)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1919)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1921)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1923)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1925)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1927)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1941)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1945)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1967)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1972)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1973)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1974)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1982)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1990)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1991)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1993)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 2008)

Transactions of the Illinois State Agricultural Society : with notices and proceedings of county societies, and kindred associations Vol. 3 1857-'58 - Francis, Simeon, 1796 -1872 (Bailhache & Baer, printers, 1859)

Transactions of the Illinois State Horticultural Society for - Horticultural Society of Northern Illinois. (The Society)

Transactions of the Kansas Academy of Science - Kansas Academy of Science. (W.Y. Morgan, 1901)

Transactions of the Kansas Academy of Science - Kansas Academy of Science. (Geo. W. Martin, 1879)

Transactions of the Linnaean Society of New York - Linnaean Society of New York (The Society, 1882)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1862)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1918)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1880)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1888)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1894)

Transactions of the Massachusetts Horticultural Society - Massachusetts Horticultural Society (s.n.], 1916)

Transactions of the New York Academy of Sciences - New York Academy of Sciences. (New York Academy of Sciences, 1888)

Transactions of the New York Academy of Sciences - New York Academy of Sciences. (New York Academy of Sciences, 1894)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1892)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1909)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1914)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1915)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1918)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1940)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1942)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1944)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1945)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1947)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1950)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1956)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1960)

Transactions of the Wisconsin Academy of Sciences, Arts, and Letters - Wisconsin Academy of Sciences, Arts; Letters. (Wisconsin Academy of Sciences, Arts, and Letters, 1971)