Image from Wikimedia Commons
US Congress - Public Domain
Der wahre Jakob - CC BY-SA 3.0
Lone Star Productions - Public Domain
David Konečný - CC BY-SA 3.0
Ramón P. Cantó - Public Domain
unknown - Public Domain
Louis Figuier - Public Domain
USDAgov - CC BY 2.0
Dnw - CC BY-SA 3.0
Art Shay, Richard Shay - CC BY-SA 3.0
Unknown (Bain News Service, publisher). Restoration by Adam Cuerden - Public Domain
image cropped and colored by my own - Public Domain
Not stated - Public Domain
Public Domain
unknown photographer - Public Domain
Saddhiyama - Public Domain
U.S. Army Public Affairs - Public Domain
Thomas Sly - CC BY 2.0
Image from Wikimedia Commons
US Congress - Public Domain
Sundquist, Don, 1936-
Image from Wikimedia Commons
Cloud, Henry Roe, 1885-1950
Image from Wikimedia Commons
Der wahre Jakob - CC BY-SA 3.0
Duchrow, Ulrich
Image from Wikimedia Commons
Lone Star Productions - Public Domain
Sheldon, Barbara, 1912-2007
Image from Wikimedia Commons
Goodrich, John Z. (John Zacheus), 1804-1885
Image from Wikimedia Commons
Burnham, Charles, 1950-
Image from Wikimedia Commons
Sterne, Stuart, 1845-1905
Image from Wikimedia Commons
David Konečný - CC BY-SA 3.0
Price, Richard, 1966-....
Image from Wikimedia Commons
Ramón P. Cantó - Public Domain
Barragán, Miguel, 1789-1836
Image from Wikimedia Commons
unknown - Public Domain
Valletti, Cesare
Image from Wikimedia Commons
Louis Figuier - Public Domain
Clark, Latimer, 1822-1898
Image from Wikimedia Commons
Day, Jeremiah, 1773-1867
Image from Wikimedia Commons
USDAgov - CC BY 2.0
Auerbacher, Inge, 1934-
Image from Wikimedia Commons
unknown - Public Domain
Soule, William Stinson, 1836-1908
Image from Wikimedia Commons
Dnw - CC BY-SA 3.0
King, Inge, 1918-
Image from Wikimedia Commons
Sobrero, Ascanio, 1812-1888
Image from Wikimedia Commons
Salan, Raoul, 1899-1984
Image from Wikimedia Commons
unknown - Public Domain
Peck, Annie S. (Annie Smith), 1850-1935
Image from Wikimedia Commons
Art Shay, Richard Shay - CC BY-SA 3.0
Shay, Arthur
Image from Wikimedia Commons
Unknown (Bain News Service, publisher). Restoration by Adam Cuerden - Public Domain
Lehár, Franz, 1870-1948
Image from Wikimedia Commons
image cropped and colored by my own - Public Domain
Faguet, Émile, 1847-1916
Image from Wikimedia Commons
Soler, Josep
Image from Wikimedia Commons
Not stated - Public Domain
Johnson, Owen, 1878-1952
Image from Wikimedia Commons
Public Domain
Whitman, Charles Joseph, 1941-1966
Image from Wikimedia Commons
unknown photographer - Public Domain
Jessopp, Augustus, 1823-1914
Image from Wikimedia Commons
Thaxter, Phyllis, 1919-2012
Image from Wikimedia Commons
Saddhiyama - Public Domain
Jørgensen, Johannes, 1866-1956
Image from Wikimedia Commons
U.S. Army Public Affairs - Public Domain
McMaster, H.R., 1962-....
Image from Wikimedia Commons
Thomas Sly - CC BY 2.0
Hunter, Charlie, 1967-
Image from Wikimedia Commons
Dunn, Nathan, 1782-1844