- Harte, C R
- Harte, H.B.
- Harte, M E
- Harte, Mary E
- Harteet, Ernst
- Hartel, Handrij
- Hartel, K E
- Hartel, Karsten
- Hartel, Karsten E.
- Härtel, Steffen
- Hartel, Tibor
- Hartell-DeNardo, Julie
- Hartely, Thelma
- Harten, Antonius van.
- Härtenberger, Guido
- Hartenberger, Jean-Louis
- Härter, Eduard
- Harter, Ira H.,
- Harter, L I
- Harter, L. L. (Leonard Lee)
- Harter, Leonard Lee, 1875-
- Harter, Samuel G. (Samuel George), 1910-1980
- Harter-Marques, Birgit
- Harterreiten-Souza, Érica Sevilha
- Hartert, Dr E
- Hartert, Ernst, 1859-1933
- Hartert, Eunst
- Hartert., Ernst
- Hartesveldt, Richard J
- Hartfield, Deborah
- Hartfield, P
- Hartford Agricultural Warehouse and Seed Store.
- Hartford Farms (Hartford, Mich.)
- Hartford Fire Insurance Co
- Harthlaub, G
- Harthman, Vanessa de Carvalho
- Hartig, Ben C.
- Hartig, F
- Hartig, Georg Ludwig, 1764-1837
- Hartig, Heinrich Julius Adolph Robert
- Hartig, Robert
- Hartig, Robert, 1839-1901
- Hartig, Theodor, 1805-1880
- Harting, Albert L.
- Harting, James Edmund
- Harting, James Edmund, 1841-1928
- Harting, M
- Harting, M P
- Harting, M. G.
- Harting, Pieter, 1812-1885
- Hartinger, Anton, 1806-
- Hartini, Sri
- Hartl, Günther
- Hartl, Günther B
- Hartland, Edwin Sidney, 1848-1927
- Hartland-Rowe, Richard C. B 1927-
- Hartlaub, Clemens 1858-1927
- Hartlaub, Gustav, 1814-1900
- Hartlaub., G
- Hartless, C S
- Hartley, A
- Hartley, Alfred,
- Hartley, C H
- Hartley, Carl (Carl Pierce), 1887-
- Hartley, Carl.
- Hartley, Cecil B.
- Hartley, Christopher S
- Hartley, D H
- Hartley, Dustin J.
- Hartley, George Inness, 1887-
- Hartley, Helen
- Hartley, J. P.
- Hartley, Joel
- Hartley, John P
- Hartley, Matt
- Hartley, Oliver.
- Hartley, R R
- Hartley, Renee-Claire
- Hartley, Robin
- Hartley, T G
- Hartley, Thelma
- Hartley, Thelma W
- Hartley, Thomas
- Hartley, Thomas G
- Hartlib, Samuel, 1662
- Hartline Nursery.
- Hartline, D K
- Hartline, Daniel K
- Hartman Stock Farm (Columbus, Ohio). Horse Dept.
- Hartman, Carl
- Hartman, Carl Gottfried, 1879-1968
- Hartman, Carl Johan
- Hartman, Carl Johan, 1790-1849
- Hartman, Carl Vilhelm, 1862-1941
- Hartman, Carl, 1824-1884
- Hartman, Carl.
- Hartman, Charles
- Hartman, D.S.
- Hartman, Daniel Stanwood, 1941-
- Hartman, E L
- Hartman, E. W.
- Hartman, Emily L
- Hartman, Frank Alexander, 1883-
- Hartman, G. F.
- Hartman, Gregory D
- Hartman, H.
- Hartman, John L.
- Hartman, John P., 1857-
- Hartman, Joseph H
- Hartman, M J
- Hartman, Olga
- Hartman, Olga, 1900-1974
- Hartman, Paul
- Hartman, Philip
- Hartman, R
- Hartman, R L
- Hartman, R. D.
- Hartman, R. E. (Russell Edwin), 1890-
- Hartman, Ray D.
- Hartman, Raymond Daniel, 1892-
- Hartman, Richard T.
- Hartman, Robert L
- Hartman, Ronald L
- Hartman, Ronald L.
- Hartman, Scott A
- Hartman, W., fl 1823-
- Hartman, William Dell, 1817-1899
- Hartmann, A
- Hartmann, August
- Hartmann, B. G. (Bernard George), 1873-
- Hartmann, C
- Hartmann, Eduard von, 1842-1906
- Hartmann, F
- Hartmann, Frans Xaver, Ritter von
- Hartmann, Franz Xaver, 1737-1791
- Hartmann, Franz, 1912
- Hartmann, G C
- Hartmann, Georg Leonhard, 1764-1828
- Hartmann, George C
- Hartmann, H E K
- Hartmann, H. M.
- Hartmann, H. Moritz.
- Hartmann, Hudson Thomas, 1914-
- Hartmann, J. D. W. (Johann Daniel Wilhelm), 1793-1862
- Hartmann, J. D. Wilhelm, 1793-1862
- Hartmann, Karl Friedrich
- Hartmann, M J
- Hartmann, Marilia T
- Hartmann, Marilia T.
- Hartmann, Marília T.
- Hartmann, Marília Teresinha
- Hartmann, Martin
- Hartmann, Max
- Hartmann, Max, 1876-1962
- Hartmann, Otto.
- Hartmann, Paulo A
- Hartmann, Paulo A.
- Hartmann, Paulo Afonso
- Hartmann, Robert, 1832-1893
- Hartmann, Rudolf.
- Hartmann, Thomas
- Hartmann, Timo
- Hartmann, Volker
- Hartmann, Wolffgang, 1663
- Hartmann's Plantation,
- Hartmann-Schroder, G
- Hartmeyer, Irmgard
- Hartmeyer, R
- Hartmeyer, Robert Heinrich Hermann
- Hartmeyer, Robert, 1874-1923
- Hartmeyer, S
- Hartmeyer, Siegfried
- Hartmeyer, Siegfried R H
- Hartnell, Peter
- Hartner, Elmer.
- Hartog, J C Den
- Hartog, J.C. den (Jacobus Cornelis), 1942-2000
- Hartog, Joannes.
- Hartog, Marcus
- Hartogh Heys van Zouteveen, Hermanus, 1841-1891
- Hartono, Sri Harjoeti
- Hartop, Emily
- Hartopp, Edmund C., Sir,
- Hartridge, Hamilton, 1886-
- Hart's Lynbrook Nurseries.
- Hart's Nursery.
- Harts, William Wright, 1866-
- Hartschen Nursery And Landscaping Service,
- Hartsell, T D
- Hartshorne, Bertram Fulk
- Hartshorne, Henry
- Hartsock, John K.
- Hartsock, Scott P
- Hartsock, T L
- Hartsoeker, Nicolaas, 1656-1725
- Hartsog, William S.
- Hartstirn, Walter,
- Hartt, Charles Frederick, 1840-1878
- Hartung Toppa, Rogério
- Hartung, E J
- Hartung, Georg, 1822?-1891
- Hartung, Viktor
- Hartung, W J
- Hartung, William
- Hartviksen, Connie
- Hartweg, C. Theodor
- Hartwell Nurseries.
- Hartwell Pecan Nurseries.
- Hartwell, Edward Mussey.
- Hartwell, Marjorie B.,
- Hartwell, Michael G.
- Hartwell, Robin S.
- Hartwick, B
- Hartwick, Eb
- Hartwig, Adolph H.
- Hartwig, G. (Georg), 1813-1880
- Hartwig, H
- Hartwig, Th
- Hartwig, W
- Hartwig, Wilhelm
- Hartz, N. (Nikolaj), 1867-1937
- Hartz, S. M.
- Hartz, Sandra M
- Hartz, Sandra M.
- Hartz, Sandra Maria
- Hartz, Sandra Maria
- Hartzell, Sean M.
- Hartzler, Jonathan E
- Hārūn, ʻabd Al-Salām Muḥammad.
- Harun, Abu Husin
- Harutyunova, Karine
- Harutyunova, Maria
- Harvard African Expedition 1926-1927
- Harvard Class of 1864
- Harvard College
- Harvard College Library
- Harvard Commencement Chief Marshal
- Harvard Cooperative Society
- Harvard Evergreen Nurseries.
- Harvard Forest (Research facility)
- Harvard Institute for Tropical Biology and Medicine.
- Harvard Office of the President
- Harvard President and Fellows
- Harvard Quinquennial Catalogue
- Harvard Treasurer's Office
- Harvard University Library
- Harvard University.
- Harvard University. Botanic Garden.
- Harvard University. Botanical Museum.
- Harvard University. Department of Philosophy