Image from Wikimedia Commons
Cephas Giovanni Thompson (died 1888) - Public Domain
Public Domain
Jelson25 - Public Domain
No illustrator named in original source. - Public Domain
Mathew Brady - Public Domain
Childe Hassam - Public Domain
unknown -
Patrick Glanz - CC BY-SA 3.0
artist unknown - Public Domain
User at project link - Public Domain
International Monetary Fund - Public Domain
unknown - Public Domain
Siebbi - CC BY 3.0
Image from Wikimedia Commons
Jahn, Wilhelm, 1835-1900
Image from Wikimedia Commons
Cephas Giovanni Thompson (died 1888) - Public Domain
Lee, Charles, 1758-1815
Image from Wikimedia Commons
Doubleday, Edward
Image from Wikimedia Commons
Auvray, Louis, 1810-1890
Image from Wikimedia Commons
Public Domain
Brewster, Bill K., 1941-
Image from Wikimedia Commons
Jelson25 - Public Domain
J. Paul Getty Museum
Image from Wikimedia Commons
No illustrator named in original source. - Public Domain
Philp, Elizabeth, 1825-1885
Image from Wikimedia Commons
Wildenstein, Georges.
Image from Wikimedia Commons
Blair, Francis Preston, 1791-1876
Image from Wikimedia Commons
Broadbent, W. H. (William Henry), Sir, 1835-1907
Image from Wikimedia Commons
Crick, Francis, 1916-2004
Image from Wikimedia Commons
Mathew Brady - Public Domain
McCloskey, John, Cardinal, 1810-1885
Image from Wikimedia Commons
Scott, Julian, 1846-1901
Image from Wikimedia Commons
Klutznick, Philip M. 1907-
Image from Wikimedia Commons
Childe Hassam - Public Domain
Thaxter, Celia, 1835-1894
Image from Wikimedia Commons
Simon, Roger Lichtenberg
Image from Wikimedia Commons
Wallace, William, Sir, -1305
Image from Wikimedia Commons
unknown -
Hill, Mirrie, 1892-1986
Image from Wikimedia Commons
Vick, Graham, 1953-....
Image from Wikimedia Commons
Patrick Glanz - CC BY-SA 3.0
Popov, Oleg, 1930-
Image from Wikimedia Commons
Masson, Antoine, 1636-1700
Image from Wikimedia Commons
Mathieu, André 1929-1968
Image from Wikimedia Commons
artist unknown - Public Domain
Briggs, Jason W., 1821-
Image from Wikimedia Commons
User at project link - Public Domain
Toren, Marta, 1926-1957
Image from Wikimedia Commons
McKenzie, James Andrew, 1840-1904
Image from Wikimedia Commons
International Monetary Fund - Public Domain
White, Harry Dexter, 1892-1948
Image from Wikimedia Commons
unknown - Public Domain
Hegar, A. (Alfred), 1830-1914
Image from Wikimedia Commons
Payne, Odie
Image from Wikimedia Commons
Siebbi - CC BY 3.0
Redgrave, Vanessa, 1937-....
Image from Wikimedia Commons
Slobodkin, Lawrence B.