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unknown - Public Domain
Public Domain
Charles Bernstein / PennSound - CC BY-SA 4.0
Friedrich Jentzen - Public Domain
ABC Television - Public Domain
North Dakota. Dept. of State - Public Domain
anonymous -
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Protter, Murray H.
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unknown - Public Domain
Cheyney, Edward Potts, 1861-1947
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Fregonese, Hugo, 1908-1987
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Public Domain
Tuttle, Elbert P. (Elbert Parr), 1897-1996
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unknown - Public Domain
Nervi, Pier Luigi
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Spemann, Hans, 1869-1941
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Charles Bernstein / PennSound - CC BY-SA 4.0
Bee, Susan.
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Heard, John T. (John Thaddeus), 1840-1927
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Breen, Edward G., 1908-1991
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Hagn, Charlotte von 1809-1891
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Plater, George, 1735-1792
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Hyde, Douglas, 1860-1949
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Anschütz, Richard, 1852-1937
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Bilson, Thomas, 1546 or 1547-1616
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Clinton, Henry, 1771-1829
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Friedrich Jentzen - Public Domain
Dulon, Rudolph, 1807-1870
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unknown - Public Domain
Karalli, Vera Alekseevna, 1889-1972
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unknown - Public Domain
Meir, Jacob, 1856-1939
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Francis, Anne, 1930-2011
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Dowson, Ernest Christopher, 1867-1900
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Folk, Joseph Wingate, 1869-1923
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Darmond, Grace, 1898-1963
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Alba, Fernando Álvarez de Toledo, duque de, 1507-1582
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Le Nôtre, André, 1613-1700
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ABC Television - Public Domain
Darren, James
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United States. National Arboretum
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North Dakota. Dept. of State - Public Domain
Haugland, Brynhild, 1905-1998
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Public Domain
Ball, L. Heisler (Lewis Heisler), 1861-1932
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anonymous -
Sitwell, Sacheverell
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Mayo, William James, 1861-1939