- Denmark. Statens Serum Institut.
- Denmead, A. K.
- Denmon, Pamela P.
- Dennant, John
- Denne, David.
- Dennen, W. H.
- Dennert, Eberhard, 1861-1942
- Dennetiere, B
- Dennetierre, B
- Dennett, R. E. (Richard Edward), 1857-1921
- Dennett, Xenia; Loyn
- Dennig Co.
- Dennig Seed Store.
- Denning, D. G.
- Denning, N T
- Denning, Peter
- Dennis, Andrew J
- Dennis, Ann
- Dennis, C J
- Dennis, C. L.
- Dennis, D S
- Dennis, D. M.
- Dennis, David M.
- Dennis, David Worth, 1849-
- Dennis, Donald F.
- Dennis, G F C
- Dennis, G. L.
- Dennis, John V
- Dennis, Jonas, 1776?-1846
- Dennis, Jonathan, Jr.
- Dennis, La Rea J.
- Dennis, Mary
- Dennis, Mary B.
- Dennis, Oregon Milton.
- Dennis, Pam
- Dennis, R W G
- Dennis, R. J.
- Dennis, R. V.
- Dennis, Roger L. H.
- Dennis, W Michael
- Dennis-Bryan, K
- Dennison, Glen
- Dennison, W C
- Denniston, Goldsmith
- Denniston, Rollin H II 1914-
- Dennler, Georges
- Dennler, J.
- Dennler, Jorge
- Denno, Robert F.
- Dennstedt, A. W. (August Wilhelm), 1776-1826
- Denny, Alfred.
- Denny, Amy
- Denny, Clarence H.
- Denny, Ellen
- Denny, F E
- Denny, F. E. (Frank Earl), 1883-
- Denny, Geoffrey C.
- Denny, Henry, 1803-1871
- Denny, J. T.
- Denny, Mark W.
- Denny, Rebecca
- Denny, William
- Denny, Winfield Augustus
- Dennys, John, -1609
- Dennys, N B
- Deno, Takuya
- Denobile, Joanna
- Denoël, Mathieu
- Denomme-Brown, S
- Denoncourt, R F
- Denoux, Guy J
- De-Nova, J. Arturo
- De-Nova, José Arturo
- Denslow, H M
- Denslow, Herbert M
- Denslow, Herbert Mckenzie
- Denslow, Julie S
- Denslow, Michael W.
- Denslow, Review By: H M
- Densmore, Frances, 1867-1957
- Densmore, Hiram D. (Hiram Delos), 1862-
- Densmore, Michael
- Densmore, R
- Densmore, Roseann V.
- Denso, Paul
- Denson Nurseries.
- Denson, C.B.
- Denson, D R
- Denson, Dana R.
- Denson, J. H.
- Denson, John, 1874
- Dent, Edward Joseph, 1876-1957
- Dent, F. K.
- Dent, H. A.
- Dent, Hastings Charles, 1855-
- Dent, Hastings Charles.
- Dent, James Norman
- Dent, Paul
- Dent, R. E.
- Dent, T C
- Dent, W. A.
- Denterlein, Geraldine
- Dentici, Antonino
- Dentinger, Bryn
- Dentith, M C
- Denton, Albert Augustus.
- Denton, Clara Janetta Fort.
- Denton, D S
- Denton, E J
- Denton, Irene
- Denton, John S. S.
- Denton, Jonty
- Denton, Matthew D
- Denton, Melinda F.
- Denton, Melissa E.
- Denton, Renee G
- Denton, Russel
- Denton, S.,
- Denton, Shelley Wright, 1859-1938
- Denton, Sherman F. (Sherman Foote), 1856-1937
- Denton, Williams & Denton.
- D'entreves, P Passerin
- Dentu, J. G. (Jean-Gabriel), 1770-1840
- Dentzel, Johan Melchior.
- Dentzien-Dias, Paula C
- Denuce, J Manuel
- Denuncio, Pablo
- Denux, Olivier
- Denver Botanic Gardens.
- Denver Botanic Gardens. Educational Department.
- Denver Nursery and Landscape Company.
- Denver Nursery and Orchard Company.
- Denver Nursery Company.
- Denver Public Library.
- Denver Seed and Floral Co.
- Denver Seed and Floral Company.
- Denver Seed House.
- Denver Wildlife Research Center.
- Denver Wildlife Research Center. Field Station (Fort Collins, Colo.)
- Denver Wildlife Research Center. International Programs Research Section.
- Denver.
- Denys de Monfort, Pierre, approximately 1768-
- Denys de Montfort, Pierre, 1766?-1820
- Denys de Montfort, Pierre, ca 1768-
- Denys Zirngiebel (Firm)
- Denys, C.
- Denys, Christiane
- Denys, Gael
- Denys, L
- Denys, Nicolas, 1598-1688
- Denys, Nicolas, 1609?-1686?
- Denysenko-Bennett, Magdalena
- Denzau, H
- Denzer, Wolfgang
- D'Eon, Robert G.
- Deonier, D L
- Deoras, P J
- Deore, L T
- Deori, Chaya
- Deoud, Héctor Francisco, 1855-1934
- Deowanish, Sureerat
- Depa, Łukasz
- Depamphilis, Claude W
- Depape, G
- Deparis, Laurent
- Deparis, O
- DeParl, Joseph A.
- Department of Indian Affairs and Northern Development
- Department Of Industrial Research Botany Division.
- De-Paula, Joel Campos
- De-Paula, Orlando Cavalari
- Depaz, Michael
- Depellegrin, Daniel
- Depéret, Charles
- Depers, A M
- Depeux, Charlotte
- Depew, Chauncey M. (Chauncey Mitchell), 1834-1928
- Depieri, Rogério A.
- Depkin, F Chris
- Deplanche, E. 1824-1874
- Deplazes, Peter
- Deplers, M A
- Depner, K R
- Depoe, Charles E
- Depoli, Guido
- Deposit Seed Company (Deposit, N.Y.)
- Depot Road Nurseries.
- Depot Road Nursery.
- Depot Roads Nurseries.
- Deppe, Ferdinand, 1794-1861
- Deprá, Gabriel
- Deprá, Gabriel de Carvalho
- Deprá, Maríndia
- DePratter, Chester B.
- Depriest, P T
- Depuiset, A.
- Depuiset, Alphonse
- Depuy, Gary
- Dequal, Lidia
- Dequatre, B
- Dequech, Sônia Thereza Bastos
- Dequevauviller, François-Jacques, 1783-1848?
- Der Hedwigia, Die Redaction
- Der Kaaden, Anna-Selma Van
- Der Made, Jan G Van
- Der Ploeg, Jan Van
- Der Reijden, E D Van
- Der, J. J.
- Der, Joshua
- Derafshan, Hossein Ali
- Deragon, W R
- Deraniyagala, P E P
- Deranja, Maks
- Derasary, Lara.
- Derazo, Janeth
- Derbák, Dávid
- Derbès, Auguste Alphonse, 1818-1894
- Derbowka, Darren
- Derby Free Library and Museum and Art Gallery.
- Derby Gardens' Gladioli (Firm)
- Derby Gardens' Gladioli.
- Derby, Earl of
- Derby, Charles D.
- Derby, E. H. (Elias Hasket), 1803-1880
- Derby, Earl of
- Derby, Edward Smith Stanley, Earl of, 1775-1851
- Derby, George S.
- Derby, Orville A
- Derby, Richard H
- Derbyshire Archaeological and Natural History Society.
- Derbyshire, E
- Derbyshire, Maria Teresa Vitral de Carvalho
- Derbyshire, P
- Derbyshire, Rachael
- Dercourt, J
- Dercum, Francis
- Derderian, Constance T.
- Deregibus, Alejandro V.
- Deregibus, Víctor A
- Deremdorj, Sodnomtsog
- de-Resende, Briseida D.
- Derez, Chantelle M.
- Derezin, Marvin
- Dergam, Jorge Abdala
- Derge, Katharine L
- Dergunova, Natalia
- Dergunova, Natalia N.
- Derham, Michael
- Derham, W. (William), 1657-1735
- Derheims, Jean Lambert, 1798-