Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1925)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1924)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1973)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1907)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1918)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1892)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1901)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1906)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1908)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1912)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1915)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1920)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1925)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2005)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2007)

Contributions to the flora of Iowa; a catalogue of the phaenogamous plants - Arthur, Joseph Charles, 1850 -1942 (Intelligencer Book Print, 1876)

Conversations on vegetable physiology, comprehending the elements of botany with their application to agriculture; adapted to the use of schools - Blake, John Lauris, 1788 -1857 (E.L. Carey and A. Hart, 1835)

Correspondence : Salm-Reifferscheidt (Joseph) and Engelmann (George), 1846-1858 - Salm-Reifferscheidt, Joseph, Graf zu, 1773 -1861 (1846)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1865)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1869)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1870)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1877)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1881)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1866)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1867)

Correspondence : Weber (Frédéric Albert) and Engelmann (George), 1865-1883 - Weber, Frédéric-Albert-Constantin 1830 -1903 (1868)

The Cottage gardener (W.S. Orr, 1850)

The Cottage gardener (W.S. Orr, 1851)

The Cottage gardener (W.S. Orr, 1852)

The Cottage gardener (W.S. Orr, 1853)

Cottage gardener and country gentleman's companion (Wm. S. Orr, 1854)

Cottage gardener and country gentleman's companion (Wm. S. Orr, 1855)