Image from Wikimedia Commons
Unknown military photographer - Public Domain
Ron Kroon / Anefo -
No photographer credited. - Public Domain
Ainsworth R. Spofford is listed as "Advisory Editor" with numerous other authors cited as contributors. No specific citation for the image illustrator - Public Domain
unknown - Public Domain
original uploader - Public Domain
Cook, Jeffrey -
Charles Rogers - CC BY-SA 2.5
Rob C. Croes / Anefo -
National Photo Company Collection - Public Domain
Nv8200p - CC BY-SA 3.0
Image from Wikimedia Commons
Unknown military photographer - Public Domain
Denfeld, Louis E. (Louis Emil), 1891-1972
Image from Wikimedia Commons
Recke, Elisa von der 1754-1833
Image from Wikimedia Commons
Ron Kroon / Anefo -
Brouwenstijn, Gré
Image from Wikimedia Commons
No photographer credited. - Public Domain
Yaw, Ellen Beach, 1869-1947
Image from Wikimedia Commons
Ainsworth R. Spofford is listed as "Advisory Editor" with numerous other authors cited as contributors. No specific citation for the image illustrator - Public Domain
Shannon, James, 1799-1859
Image from Wikimedia Commons
Kuhn, Rodolfo, 1934-
Image from Wikimedia Commons
Steele, Frederick, 1819-1868
Image from Wikimedia Commons
unknown - Public Domain
Lyman, Theodore, 1792-1849
Image from Wikimedia Commons
unknown - Public Domain
Bonney, Lores, 1897-
Image from Wikimedia Commons
Bard, Samuel, 1742-1821
Image from Wikimedia Commons
unknown - Public Domain
Cockran, William Bourke, 1854-1923
Image from Wikimedia Commons
original uploader - Public Domain
Emerson, William Henry, 1860-1924
Image from Wikimedia Commons
Wilson, George, 1818-1859
Image from Wikimedia Commons
Cook, Jeffrey -
Yellott, John I.
Image from Wikimedia Commons
Riis, Jacob A. (Jacob August), 1849-1914
Image from Wikimedia Commons
Charles Rogers - CC BY-SA 2.5
Conway, Lynn.
Image from Wikimedia Commons
Shivers, Allan, 1907-1985
Image from Wikimedia Commons
Boissieu, Jean-Jacques de 1736-1810
Image from Wikimedia Commons
Philpott, H. Cloyd (Harvey Cloyd), 1909-1961
Image from Wikimedia Commons
Rob C. Croes / Anefo -
Kyemba, Henry, 1939-
Image from Wikimedia Commons
National Photo Company Collection - Public Domain
Judge, Joe, 1894-1963
Image from Wikimedia Commons
unknown - Public Domain
Bartlett, Dana W. (Dana Webster), 1860-
Image from Wikimedia Commons
Nv8200p - CC BY-SA 3.0
Romano, Carlin
Image from Wikimedia Commons
Pineau, Christian
Image from Wikimedia Commons
Girardin, Émile de, Mme, 1804-1855
Image from Wikimedia Commons
Katz, Jack, 1927-
Image from Wikimedia Commons
McCandless, Wilson, 1810-1882
Image from Wikimedia Commons
Seeckt, Hans von 1866-1936
Image from Wikimedia Commons
Toller, Ernst, 1893-1939
Image from Wikimedia Commons
Pfeffinger, Johann, 1493-1573