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- Havell, Robert, 1793-1878
- Havelock, Thomas, Sir, 1877-
- Haveman, Rense
- Havemann, Frank
- Havemeyer, Katharine S.
- Havemeyer, T. A.
- Haven Seed Co.
- Haven Seed Company (Santa Ana, Calif.)
- Haven Seed Company (Santa Ana, Calif.).
- Haven Seed Company (Santa Ana. Calif.)
- Haven Seed Company.
- Haven, Dexter S
- Haven, Ds
- Haven, Edwin M.
- Haven, Norine D
- Haven, Roberta L.
- Haven, Samuel F. (Samuel Foster), 1806-1881
- Haven, W. S.,
- Havenga, Brendan
- Havenhand, Jon N
- Havens, Barrington S.
- Havens, Kayri
- Havens, P L
- Havens, W K
- Havera, Stephen P.
- Haverd, Vanessa
- Haverford College. Department of Biology.
- Haverford College. Dept. of Biology.
- Haverhorst, P
- Haverinen, Risto
- Haverkost, Terry R.
- Havermans, Charlotte
- Haverroth, Moacir
- Haverschmidt, F
- Haverschmidt, Fr
- Haverty, Michael I
- Haviland, Chilson B.
- Haviland, E
- Haviland, F E
- Haviland, G D
- Haviland, G F
- Haviland, George D
- Haviland, George Darby,
- Haviland, John, active 1613-1638
- Haviland, Maud D. (Maud Doria)
- Haviland., Maud D
- Havill, N P
- Havill, Nathan P.
- Havis, John R.
- Havlíček, Marek
- Havlik, Neil
- Havran, J.
- Havran, J. Christopher
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- Havrylenko, M
- Hawaii (Ter.)
- Hawaii (Ter.) Milk Commission.
- Hawaii Agricultural Experiment Station
- Hawaii Agricultural Experiment Station.
- Hawaii.
- Hawaii. Board of Commissioners of Agriculture and Forestry.
- Hawaii. Board of Commissioners of Agriculture and Forestry. Division of Entomology.
- Hawaii. Board of Commissioners of the Alaska-Yukon Pacific Exposition.
- Hawaii. Board of Health.
- Hawaii. Commission on Water Resource Management.
- Hawaii. Department of Foreign Affairs
- Hawaii. Department of Land and Natural Resources.
- Hawaii. Dept. of Agriculture and Conservation.
- Hawaii. Dept. of Foreign Affairs.
- Hawaii. Dept. of Land and Natural Resources.
- Hawaii. Division of Entomology.
- Hawaii. Division of Forestry.
- Hawaii. Fruit growing and truck farming commission.
- Hawaii. Market News Service Branch.
- Hawaii. Milk Commission.
- Hawaiian Botanical Society.
- Hawaiian Entomological Society.
- Hawaiian sugar planters association.
- Hawaiian sugar planters' association.
- Hawaiian Sugar Planters' Association. Division of Agriculture and Chemistry.
- Hawaiian Sugar Planters' Association. Division of Entomology.
- Hawaiian Sugar Planters' Association. Division of Pathology and Physiology.
- Hawaiian Sugar Planters' Association. Experiment Station
- Hawaiian Sugar Planters' Association. Experiment Station.
- Hawaiian Sugar Planters' Association. Experiment Station. Division of Agriculture and Chemistry.
- Hawaiian Sugar Planters' Association. Experiment Station. Division of Pathology and Physiology.
- Hawaiian Sugar Planters' Association. Joint committee on forestry, Hawaiin sugar planters' association and Board of agriculture and forestry.
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- Hawbaker, C. C. (Claude Clifford), 1886-
- Hawden, Wade L
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- Hawes Book Club,
- Hawes, Austin F. (Austin Foster), 1879-1962
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- Hawes, Charles Boardman, 1889-1923
- Hawes, Cyrus A.
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- Hawes, George Wesson, 1848-1882
- Hawes, Ina L. (Louise)
- Hawes, Suzanne R
- Hawey, Connor
- Hawk & Son Nursery.
- Hawk Mountain Sanctuary Association.
- Hawk, Estella,
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- Hawk, Lester,
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- Hawk, U. G.
- Hawke, Amy
- Hawke, Angus
- Hawken, Roger William Hercules
- Hawker, J. C.
- Hawker, P
- Hawker, P C
- Hawker, Peter, 1786-1853
- Hawker, R Mcd
- Hawker, Richard
- Hawkersmith & Sons Nursery,
- Hawkes, A D
- Hawkes, Alex D
- Hawkes, C R
- Hawkes, Chas. T.
- Hawkes, Clarence, 1869-1954
- Hawkes, Clifford L.
- Hawkes, Ernest William, 1883-
- Hawkes, G P
- Hawkes, J G
- Hawkes, O A Merritt
- Hawkes, Onèra A Merritt
- Hawkes, Peter
- Hawkes, T A
- Hawkes, Tim
- Hawkeswood, T J
- Hawkesworth, Alfred
- Hawkesworth, John, 1715?-1773
- Hawkey, Diane E
- Hawkeye Seed Company.
- Hawking, J H
- Hawkings, A. H.
- Hawkins Iris Garden,
- Hawkins, A F A
- Hawkins, Alfred O.
- Hawkins, Arthur Stuart.
- Hawkins, B A
- Hawkins, B. Waterhouse (Benjamin Waterhouse), 1807-1889
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- Hawkins, James R. V.
- Hawkins, John, 1719-1789
- Hawkins, John, 1761-1841
- Hawkins, John, Sir, 1719-1789
- Hawkins, John.
- Hawkins, Julie
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- Hawkins, Mary Louise.
- Hawkins, Melissa TR
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- Hawkins, Sarah J
- Hawkins, Stuart
- Hawkins, Thomas, 1810-1889
- Hawkins, Tracy S
- Hawkins, William E
- Hawkinson, William
- Hawkins-Whitshed, Elizabeth Alice Frances
- Hawks Nursery Co.
- Hawks Nursery Company.
- Hawks, Catherine
- Hawks, D
- Hawks, David
- Hawks, David C
- Hawks, David C.
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- Hawks, Francis L. 1798-1866
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- Hawks, S. N., Jr. (Stirling Norman), 1919-2007
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- Hawksworth, Frank G. (Frank Goode), 1926-1993
- Hawksworth, Frank G., 1926-
- Hawksworth, John.
- HawkWatch International.
- Hawley Nurseries (Hart, Mich.)
- Hawley, Alex W. L. (Alex Wilson Lewis), 1949-
- Hawley, E. M.
- Hawley, Geo. A.
- Hawley, Helen D.,
- Hawley, I M
- Hawley, Ira M
- Hawley, Ira Myron, 1884-
- Hawley, Jonathan
- Hawley, L. F. (Lee Fred), 1882-
- Hawley, Ralph C. (Ralph Chipman), 1880-1971
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- Haworth, A H
- Haworth, Adrian Hardy, 1768-1833
- Haworth, Erasmus, 1855-1932
- Haworth, Robert J
- Haworth-Booth, Michael.
- Hawranek
- Haws, B. Austin.
- Haws, María C
- Hawtayne, Miss
- Hawthorne, Benjamin J.
- Hawthorne, H. W. (Harvey W.), 1875-
- Hawthorne, Hildegarde.
- Hawthorne, J. B.
- Hawthorne, Wayne R.
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- Haxel, Gordon
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- Haxo, Francis T
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- Haxton, Tim
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- Hay, Capt
- Hay, Captain
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