- Gendron, Andrée D.
- Gendron, François, 1618-1688
- Gené, Carlo Giuseppe, 1800-1847
- Gené, Josepa
- Géneau de Lamarlière, L. (Léon), 1865-1903
- Geneletti, Davide
- General agricultural committee.
- General Bulb Co., Inc.,
- General Bulb Company.
- General Electric Company. Research Laboratory.
- General, David Emmanuel M.
- Genereux, Brian
- Generozov, V. IA.
- Genersch, Elke
- Genesee County Nurseries,
- Genesee County Nurseries.
- Genesee Valley Gardens.
- Genesee Valley Nurseries.
- Genesse Valley Gardens.
- Genest-Villard, Huguette
- Genet, Ph.
- Geneva Dahlia Gardens.
- Geneva Floral
- Geneva Floral Co. (Geneva, N.Y.)
- Geneva Gardens,
- Geneva Nurseries (Geneva, N.Y.)
- Geneva Nurseries (Geneva, N.Y.),
- Geneva Nursery (Geneva, N.Y.)
- Geneva, Anthony J
- Genevier, Léon Gaston, 1830-1880
- Geneviève, Mimeur
- Geney-Gros.
- Geng, Bo Jie
- Geng, Hui
- Geng, Huimin
- Geng, Liyang
- Geng, Xuexia
- Geng, Yi Li
- Geng, Ying-Min
- Geng, Yuying
- Gengler, Josef, 1863-1931
- Gengler, Karla M
- Génier, François
- Geniez, Philippe
- Genin, A
- Genini, Julieta
- Genise, Jorge Fernando
- Genkal, Sergeĭ Ivanovich
- Gennadius, Panagiotis Georgiou, 1848-1917
- Gennari, F. John.
- Gennaro, Andrea
- Gennaro, Antonio L.
- Gennesseaux, Maurice G.
- Genocchi, Angelo 1817-1889
- Genoud, David
- Genoud, M
- Genouville, E. R., 1820
- Genov, Todor
- Genova, Beloslava
- Genova, Inc. Museo civico di storia naturale.
- Genovese Marcomini, Poliana Roversi
- Genovese, Giuseppa
- Genovesi, Antonio
- Genovesi, Piero
- Genoways, Hugh H.
- Genoy-Puerto, Alexander
- Gens, Eugène.
- Gensel, Patricia G
- Gensler, I. S. (Ivan Semenovich)
- Gent, Martin P. N.
- Genta-Iturreria, Santiago F
- Gentekaki, Eleni
- Gentelini, André Luis
- Genter, David Leon
- Genth, F. A. (Frederick Augustus), 1820-1893
- Genthe, Arnold, 1869-1942
- Genthe, Karl Wilhelm
- Gentil, Ambroise, 1842-
- Gentil, Daniel Felipe de Oliveira 1969-
- Gentil, François
- Gentil, L
- Gentil, Regina Célia
- Gentilcore, Dominic.
- Gentile, Adrian G
- Gentile, Elisabetta
- Gentile, Gennaro
- Gentile, Rosana
- Gentile, Vincenzo
- Gentili, Elio
- Gentili, Giuseppe
- Gentili, Mario O.
- Gentili, Patricia
- Gentili, Rodolfo
- Gentilli, Augusto
- Gentilli, Joseph, 1912-2002
- Gentil-Vasconcelos, Huann Carllo
- Gentle, Percy H., 1892-1958
- Gentle, Virginia
- Gentleman, Tobias.
- Gentner, Walter Andrew 1922-
- Genton du Barsac, François Auguste de.
- Gentry, Alan F.
- Gentry, Alan William
- Gentry, Alwyn H. (Alwyn Howard) 1945-1993
- Gentry, Alwyn Howard
- Gentry, Anthea
- Gentry, Cecil R.
- Gentry, David A.
- Gentry, Howard Scott
- Gentry, Jodi
- Gentry, Johnnie L. (Johnnie Lee), 1939-
- Gentry, Joseph W
- Gentry, Roger L.
- Gentry, Thomas G. (Thomas George), 1843-1905
- Genty, Paul-André 1861-1955
- Gény-Gros,
- Genzano, Gabriel N. (Gabriel Néstor)
- Geo A. Weaver Company.
- Geo B. Haskell & Co.
- Geo B. Haskell Company.
- Geo H. Mellen Co.
- Geo Hemm (Firm)
- Geo W. Hile (Firm)
- Geo. A. Schultz (Firm)
- Geo. A. Shultz (Firm)
- Geo. A. Backus (Firm)
- Geo. A. Hawley & Son.
- Geo. A. Hawley (Firm)
- Geo. A. Mitsch (Firm)
- Geo. A. Morse (Firm)
- Geo. A. Read (Firm)
- Geo. A. Shultz (Firm)
- Geo. A. Steele (Firm)
- Geo. A. Stone (Firm)
- Geo. A. Weaver Co.
- Geo. A. Weaver Company.
- Geo. A. White & Son.
- Geo. and Anna Hunsberger (Firm)
- Geo. B. McVay, Jr. (Firm)
- Geo. B. Moulder (Firm)
- Geo. B. Watson (Firm)
- Geo. C. Benson (Firm)
- Geo. C. Roeding (Firm)
- Geo. C. Roeding Company.
- Geo. C. Woolson (Firm)
- Geo. Carter & Co.
- Geo. Cooling & Sons.
- Geo. D. Aiken
- Geo. D. Aiken (Firm)
- Geo. E. Baldwin & Co.
- Geo. E. Baldwin, Inc.,
- Geo. E. Millen (Firm)
- Geo. E. Stein & Son.
- Geo. F. Bailey & Co.'s Grand Menagerie.
- Geo. F. Beede (Firm)
- Geo. F.C. Paul (Firm)
- Geo. Gibbons and Co.,
- Geo. H. Barnes (Firm)
- Geo. H. Froelich (Firm)
- Geo. H. Mellen Co.
- Geo. H. Price (Firm)
- Geo. H. Scheer (Firm)
- Geo. H. Schenck (Firm)
- Geo. H. Walker & Co.
- Geo. H. Walker (Firm)
- Geo. H. Whiting (Firm)
- Geo. H. Whiting Nurseries.
- Geo. Hancock (Firm)
- Geo. J. Ball, Inc.
- Geo. J. Kellogg & Son.
- Geo. J. Kellogg & Sons.
- Geo. K. Groff (Firm)
- Geo. Keller and Sons.
- Geo. L. Siegel (Firm)
- Geo. L. Taber (Firm)
- Geo. N. Smith (Firm)
- Geo. P. Cook (Firm)
- Geo. P. Sexauer & Son.
- Geo. Pattington & Sons.
- Geo. Q. Dow (Firm)
- Geo. R. Pedrick & Son.
- Geo. R. Pedrick & Sons.
- Geo. R. Pedrick (Firm)
- Geo. Richardson (Firm)
- Geo. S. Cooper & Son.
- Geo. S. Haskell & Co.
- Geo. S. Woodruff (Firm)
- Geo. T. Browning Co.
- Geo. T. Fielding & Sons.
- Geo. T. Fielding's Sons.
- Geo. Tait & Sons, Inc.
- Geo. Thompson & Sons (Firm : Louisville, Ky.)
- Geo. W. Bridgman Nursery Company.
- Geo. W. Hill & Company.
- Geo. W. Miller (Firm)
- Geo. W. Morahn (Firm)
- Geo. W. Park (Firm)
- Geo. W. Park Seed Co.
- Geo. W.P. Jerrard Co.
- Geo. Wittbold (Firm)
- Geo. Wittbold Co.
- Geo. Witthold Co.
- Geoexplorers International, Inc.
- Geoffrey John Kerrich
- Geoffroy Saint-Hilaire, Etienne, 1772-1844
- Geoffroy Saint-Hilaire, Isidore, 1805-1861
- Geoffroy, M. (Etienne-Louis), 1725?-1810
- Geoffroy, Etienne-François, 1672-1731
- Geoffroy, Jean-Jacques
- Geoghegan, Irene E
- Geograficheskoe obshchestvo SSSR
- Geograficheskoe obshchestvo SSSR. Aralskaia ekspeditsiia.
- Geographic Dynamics Corp.
- Geographic Society of Chicago.
- Geographical and Geological Survey of the Rocky Mountain Region (U.S.)
- Geographical Society of Baltimore.
- Geographical Surveys West of the 100th Meridian (U.S.)
- Geographische Gesellschaft in Bremen.
- Geographische Gesellschaft in Lübeck
- Geological and Agricultural Survey of Texas.
- Geological and Geographical Survey of the Territories (U.S.)
- Geological and Natural History Survey (Wis.)
- Geological and Natural History Survey of Canada.
- Geological and Natural History Survey of Minnesota.
- Geological and Polytechnic Society of the West Riding of Yorkshire.
- Geological Museum (Cairo, Egypt)
- Geological Society of America.
- Geological Society of America. Meeting DeKalb, Ill.) 1972-
- Geological Society of America. Meeting Northern Illinois University) 1985-
- Geological Society of America. North-Central Section. Meeting DeKalb, Ill.) 1972-
- Geological Society of America. North-Central Section. Meeting Northern Illinois University) 1985-
- Geological Society of London
- Geological Society of London. Library.
- Geological Society of Norfolk.
- Geological Society of Pennsylvania.
- Geological Survey (U.S.)
- Geological Survey (U.S.). Area Oil Shale Supervisor's Office.
- Geological Survey (U.S.). Biological Resources Division.
- Geological Survey (U.S.). National Mapping Division.
- Geological Survey (U.S.). Water Resources Division.
- Geological Survey of Alabama.
- Geological Survey of Alabama. Museum.
- Geological Survey of Arkansas.
- Geological Survey of California.
- Geological Survey of Canada
- Geological Survey of Canada. Herbarium.
- Geological Survey of Canada. Museum.
- Geological Survey of Great Britain.
- Geological Survey of India.
- Geological Survey of India. Museum.