Image from Wikimedia Commons
Unidentified photographer - Public Domain
Raffy Espiritu - CC BY-SA 2.0
Jorfer - Public Domain
J.L. Albright -
unknown - Public Domain
Not stated - Public Domain
256 Fifth Ave - Public Domain
Smithsonian Institution from United States - Public Domain
NBC Television - Public Domain
unknown, but as a portrait of a man who died in 1817, it's same to assume PD. - Public Domain
Original uploader was :eo:Ziko - Public Domain
original uploader - Public Domain
Image from Wikimedia Commons
Unidentified photographer - Public Domain
Benda, Wladyslaw T.
Image from Wikimedia Commons
Raffy Espiritu - CC BY-SA 2.0
José, F. Sionil (Francisco Sionil), 1924-
Image from Wikimedia Commons
Catarina, Queen, consort of John III, King of Portugal, 1507-1578
Image from Wikimedia Commons
Jorfer - Public Domain
McNeal, Don
Image from Wikimedia Commons
Stuart, James, -1793
Image from Wikimedia Commons
Chapin, Roy D. (Roy Dikeman), 1880-1936
Image from Wikimedia Commons
Makhno, Nestor Ivanovich, 1889-1934
Image from Wikimedia Commons
Domagk, Gerhard, 1895-1964
Image from Wikimedia Commons
Bartholomew, of San Concordio, 1262-1347
Image from Wikimedia Commons
Deml, Jakub, 1878-1961
Image from Wikimedia Commons
J.L. Albright -
Cook, Orval R. (Orval Ray), 1898-1980
Image from Wikimedia Commons
Barker, Wharton, 1846-1921
Image from Wikimedia Commons
unknown - Public Domain
Buschke, Abraham, 1868-1943
Image from Wikimedia Commons
Pauli, Wolfgang, 1900-1958
Image from Wikimedia Commons
Not stated - Public Domain
Halsey, Francis W. (Francis Whiting), 1851-1919
Image from Wikimedia Commons
unknown - Public Domain
Cruto, Alessandro, 1847-1908
Image from Wikimedia Commons
Hackett, Buddy, 1924-2003
Image from Wikimedia Commons
256 Fifth Ave - Public Domain
Goodwin, Nat. C. (Nathaniel Carll), 1857-1919
Image from Wikimedia Commons
unknown - Public Domain
Azef, Evno Fishelevich, 1869-1918
Image from Wikimedia Commons
Smithsonian Institution from United States - Public Domain
Strother, Dora Jean Dougherty, 1921-2013
Image from Wikimedia Commons
McCollum, Vashti Cromwell
Image from Wikimedia Commons
O'Shea, Michael, 1906-1973
Image from Wikimedia Commons
NBC Television - Public Domain
Nolan, Lloyd
Image from Wikimedia Commons
Den, Lili, 1888-1963
Image from Wikimedia Commons
unknown - Public Domain
Htin Aung,, U.
Image from Wikimedia Commons
unknown, but as a portrait of a man who died in 1817, it's same to assume PD. - Public Domain
Wheelock, John, 1754-1817
Image from Wikimedia Commons
unknown - Public Domain
Schrenck-Notzing, A. von (Albert), 1862-1929
Image from Wikimedia Commons
Terrick, Richard, 1710-1777
Image from Wikimedia Commons
Original uploader was :eo:Ziko - Public Domain
Boulton, Marjorie
Image from Wikimedia Commons
original uploader - Public Domain
Boleslavsky, Richard, 1889-1937