- North Carolina. Trustees of the public libraries.
- North Carolina. Trustees of the Public Libraries.
- North Central Forest Experiment Station (Grand Rapids, Minn.)
- North Central Forest Experiment Station (Saint Paul, Minn.)
- North Central Forest Experiment Station (Saint Paul, Minn.). Institute of Forest Genetics.
- North Central Iowa Shorthorn Association
- North Central States Regional Conference Of Extension Foresters Allerton, Ill.) 1950-
- North China Branch Of The Royal Asiatic Society.
- North Dakota Agricultural College.
- North Dakota Agricultural Experiment Station (Fargo)
- North Dakota State University. Department of Zoology.
- North Dakota Water Resources Research Institute.
- North Dakota Winter Show Valley City, North Dakota) 1966-
- North Dakota.
- North Dakota. Department of Agriculture and Labor.
- North Dakota. Dept. of Public Instruction.
- North Dakota. Pittman-Robertson Division.
- North Dakota. State Game and Fish Department.
- North Dakota. State Livestock Sanitary Board.
- North Jersey Nurseries.
- North Lanark Farmers' Institute.
- North London School of Medicine.
- North Main Street Nursery.
- North Mehoopany Gladiolus Gardens.
- North Michigan Nursery.
- North of England Institute of Mining and Mechanical Engineers
- North of England Institute of Mining and Mechanical Engineers.
- North Pacific Exploring Expedition, 1853-1856
- North Pacific exploring expedition.
- North Platte Floral Co. and Nurseries.
- North Platte Floral Company and Nurseries.
- North Queensland Naturalists' Club.
- North River Farms.
- North Sacramento Nurseries.
- North Staffordshire Field Club.
- North Star Nursery Co.
- North Star Nursery Company.
- North Star Seed Farms.
- North State Nursery Co.
- North Street Greenhouses,
- North West Company.
- North Western Seed Co.
- North Wichert Gardens.
- North Wisconsin Seed Co.
- North, Alfred J.
- North, Alfred J. (Alfred John), 1855-1917
- North, Barbara B
- North, Charles Edward, 1869-
- North, D J
- North, Ernest
- North, F
- North, F.,
- North, Frederick, Lord, 1732-1792
- North, George W
- North, Jeannette P.
- North, M. E. W.
- North, Malcolm
- North, Marianne, 1830-1890
- North, Michael R
- North, Myles E W
- North, Nelson L. (Nelson Luther), 1830-
- North, Norman R.
- North, Roger, 1653-1734
- North, Susan
- North, Tom
- North, Wheeler J
- North, William Henry John, 1836-1932
- North., Alfred John
- Northboro Dahlia and Gladiolus Gardens.
- Northbrook Dahlia Gardens,
- Northbrook Gardens.
- Northcliffe, Alfred Harmsworth, Viscount, 1865-1922
- Northcote, E M
- Northcote, E Marjorie
- Northcote, G. A. S.
- Northcote, Geoffry
- Northcote, Rosalind, 1873-1950
- Northcott, Tom H.
- Northcutt, R. Glenn.
- North-East Agricultural Society.
- Northeast Fisheries Center (U.S.)
- Northeast Fisheries Science Center (U.S.)
- Northeast Regional Plant Introduction Station (Geneva, N.Y.)
- Northeast Utilities Service Company.
- Northeast Utilities Service Company. Environmental Laboratory.
- Northeastern Forest Experiment Station (Broomall, Pa.)
- Northeastern Forest Experiment Station (Radnor, Pa.)
- Northeastern Forest Soils Conference.
- North-eastern Forestry Co.
- Northeastern Forestry Committee. Forest Insects Subcommittee RP 2.03.
- North-Eastern Forestry Company.
- Northend, Mary Harrod, 1850-1926
- Northern Alberta Development Council.
- Northern Arizona Audubon Society.
- Northern Arizona University.
- Northern Arizona University. Ecological Restoration Institute.
- Northern Arizona University. School of Forestry.
- Northern California Botanists.
- Northern California Malacozoological Club.
- Northern Colorado Nursery Company.
- Northern Crop Science Laboratory (U.S.)
- Northern Field Seed Co.
- Northern Forest Experiment Station (Juneau, Alaska)
- Northern Forest Experiment Station (Juneau, Alaska).
- Northern Forest Experiment Station.
- Northern Gulf of Mexico Environmental Studies Planning Workshop New Orleans, La.) 1989-
- Northern Indiana Seed Co.
- Northern Iowa Gladiolus Gardens.
- Northern Lights Gardens.
- Northern Lights, Inc.
- Northern Nursery Co.
- Northern Nursery Co. (Denver, Colo.)
- Northern Nursery Co. (Ipswich, S.D.)
- Northern Nursery Co. (Traer, Iowa)
- Northern Nursery Company (Ipswich, S.D.)
- Northern Nut Growers Association.
- Northern Nut Tree Nursery.
- Northern Pacific Railway Company.
- Northern Plains Governors' Conference Rapid City, S.D.) 1992-
- Northern Plains Soil and Water Research Center (U.S.)
- Northern Rocky Mountain Forest and Range Experiment Station (Missoula, Mont.)
- Northern Rocky Mountain Science Center.
- Northern Rocky Mountain Wolf Recovery Team.
- Northern Rocky Mt. Native Evergreens.
- Northern Seed & Nursery Company.
- Northern Seed Co. (Valley City, N.D.)
- Northern Seed Company (Sheridan, Wyo.)
- Northern Seed Company (Sheridan, Wyoming),
- Northern Seed Company.
- Northern Spotted Owl Recovery Team.
- Northern Territory Field Naturalists' Club
- Northern Territory Museum of Arts and Sciences
- Northern Territory. Dept. of Transport and Works
- Northern Territory. Division of Agriculture and Stock.
- Northern Territory. Division of Primary Industry.
- Northern Virginia Nursery,
- Northern, James R
- Northern, Tamara
- Northey, Allison
- North-Grove Fruit Farm and Gardens.
- Northington, D
- Northington, David K.
- Northland, Irma
- Northland-Leppe, Irma
- Northmore Nursery Company, Inc.
- Northport Nurseries.
- Northrop, Alice R
- Northrop, Alice Rich, 1864-1922
- Northrop, Amanda
- Northrop, Birdsey Grant, 1817-1898
- Northrop, Henry Davenport, 1836-1909
- Northrop, John Howard, 1891-
- Northrop, John I
- Northrop, John I, 1861-1891
- Northrop, John I., 1861-1891
- Northrop, R B
- Northrop, Robert B
- Northrup King & Co.
- Northrup King Co.
- Northrup, A. Judd (Ansel Judd), 1833-1919
- Northrup, B. G. (Birdsey Grant), 1817-1898
- Northrup, John Isaiah, 1861-1891
- Northrup, King & co., Minneapolis.
- Northstrom, T E
- Northumberland Sea Fisheries Committee.
- Northup, Flora E
- Northup, George H.
- Northwest and Alaska Fisheries Center (U.S.). Resource Ecology and Fisheries Management Division.
- Northwest Angora Goat Association.
- Northwest Bulb Co.
- Northwest Fruit Growers' Association.
- Northwest Horticultural Society.
- North-west mills company, Winona, Minn.
- Northwest Mining Association (U.S.)
- Northwest Nursery Co.
- Northwest Nursery Company.
- Northwest Nursery.
- Northwest Ornamental Horticultural Society
- Northwest Power Planning Council (U.S.)
- Northwest Resource Information Center.
- Northwest Seed Company.
- Northwest Territories. Department of Information.
- Northwest Territories. Wildlife Service.
- Northwestern Energy (Firm),
- Northwestern Grown Seeds.
- Northwestern medicine co., Keokuk, Iowa.
- North-Western Nurseries.
- Northwestern Nursery.
- Northwood Nurseries.
- Northwood, C
- Norton Gardens.
- Norton Mary E.B.
- Norton Plant Shop
- Norton, A H
- Norton, A.
- Norton, Albert
- Norton, Amanda Stone
- Norton, Andrew
- Norton, Andrews
- Norton, Arthur H
- Norton, Arthur H.
- Norton, Arthur Herbert
- Norton, Arthur Herbert, 1870-1943
- Norton, Arthur L.
- Norton, Ben
- Norton, Bonham, 1565-1635
- Norton, Brian
- Norton, C. E. C.,
- Norton, Catharine E.
- Norton, Cathy
- Norton, Charles E.
- Norton, Charles Eliot, 1827-1908
- Norton, D. W. (David W.)
- Norton, E
- Norton, E F
- Norton, E. H.
- Norton, Edward, 1823-1894
- Norton, Elizabeth Seyxour
- Norton, Evelyn
- Norton, F. H. (Frederick Harwood), 1896-
- Norton, F. N.
- Norton, George Freer, 1867-
- Norton, Grace, 1834-1926
- Norton, Horace W.
- Norton, I O
- Norton, Ian
- Norton, J
- Norton, J B S
- Norton, J F
- Norton, J H
- Norton, J. B.
- Norton, J. B. S. (John Bitting Smith), 1872-1966
- Norton, Jesse Baker.
- Norton, John P. (John Pitkin), 1822-1852
- Norton, John, 1612
- Norton, Joyce.
- Norton, L. J. (Laurence Joseph), 1896-1956
- Norton, Leroy F
- Norton, Lisa
- Norton, Margaret.
- Norton, Michael R.
- Norton, R A
- Norton, Roy A
- Norton, S
- Norton, S P W
- Norton, S. T. W. Mrs
- Norton, Sal
- Norton, Sally
- Norton, Stephanie
- Norton, T W