Image from Wikimedia Commons
Lairich Rig -
unknown - Public Domain
US gov - Public Domain
The Göttingen Observatory photo, courtesy Hartmut Grosser. - Public Domain
U.S. Senate - Public Domain
El Ágora - CC BY-SA 3.0
Unknown (but made for John Daye) - Public Domain
Contemporary portrait - Public Domain
original uploader - Public Domain
J. Hubert - Public Domain
Unknown artist. Based on photograph by Kurtz. - Public Domain
Maine State Archives (Augusta, Maine) - Public Domain
ホーボー - CC BY-SA 3.0
Who-When-What Company - Public Domain
gdcgraphics -
Gonnord (dessin)/R. Mathis (scan) - Public Domain
Erling Mandelmann - CC BY-SA 3.0
Daniel J. Strain - Public Domain
:en:Charles Balthazar Julien Févret de Saint-Mémin - Public Domain
Ylla (self-portrait) -
Thesupermat - CC BY-SA 3.0
Image from Wikimedia Commons
Lairich Rig -
Weir, Tom, 1914-2006
Image from Wikimedia Commons
unknown - Public Domain
Williams, Albert Rhys, 1883-1962
Image from Wikimedia Commons
US gov - Public Domain
Bradley, Stephen Row, 1754-1830
Image from Wikimedia Commons
The Göttingen Observatory photo, courtesy Hartmut Grosser. - Public Domain
Hertzsprung, Ejnar, 1873-1967
Image from Wikimedia Commons
Albertinelli, Mariotto, 1474-1515
Image from Wikimedia Commons
U.S. Senate - Public Domain
Ellsworth, Oliver, 1745-1807
Image from Wikimedia Commons
El Ágora - CC BY-SA 3.0
Gómez Pedraza, Manuel 1789-1851
Image from Wikimedia Commons
Unknown (but made for John Daye) - Public Domain
Day, John, 1522-1584
Image from Wikimedia Commons
Contemporary portrait - Public Domain
Crocker, Uriel, 1796-1887
Image from Wikimedia Commons
Stewart, James, époque 1850
Image from Wikimedia Commons
Maier, Michael, 1568-1622
Image from Wikimedia Commons
original uploader - Public Domain
Viète, François, 1540-1603
Image from Wikimedia Commons
J. Hubert - Public Domain
Macleay, William, Sir, 1820-1891
Image from Wikimedia Commons
Isambert, M. (François André), 1792-1857
Image from Wikimedia Commons
Unknown artist. Based on photograph by Kurtz. - Public Domain
Scudder, Henry J. (Henry Joel), 1825-1886
Image from Wikimedia Commons
Ingalls, Rufus, 1818-1893
Image from Wikimedia Commons
unknown - Public Domain
Kruzenshtern, Ivan Fedorovich, 1770-1846
Image from Wikimedia Commons
Maine State Archives (Augusta, Maine) - Public Domain
Littlefield, Nathaniel Swett, 1804-1882
Image from Wikimedia Commons
ホーボー - CC BY-SA 3.0
Krenov, James
Image from Wikimedia Commons
Schildkraut, Joseph, 1895-1964
Image from Wikimedia Commons
Who-When-What Company - Public Domain
Boon, Ratliff, 1781-1844
Image from Wikimedia Commons
gdcgraphics -
Dorff, Stephen, 1973-
Image from Wikimedia Commons
Vercel, Roger, 1894-1957
Image from Wikimedia Commons
Kemmer, Nicholas
Image from Wikimedia Commons
Gonnord (dessin)/R. Mathis (scan) - Public Domain
Praet, Joseph van, 1754-1837
Image from Wikimedia Commons
Erling Mandelmann - CC BY-SA 3.0
Chappaz, Maurice
Image from Wikimedia Commons
Daniel J. Strain - Public Domain
Robinson, George D. (George Dexter), 1834-1896
Image from Wikimedia Commons
:en:Charles Balthazar Julien Févret de Saint-Mémin - Public Domain
Bedinger, George Michael, 1756-1843
Image from Wikimedia Commons
Ylla (self-portrait) -
Ylla, 1910-1955
Image from Wikimedia Commons
Thesupermat - CC BY-SA 3.0
Cocker, Joe