General Libraries, The University of Texas at Austin ( http://www.lib.utexas.edu/photodraw/portraits/ архивная копия в Wayback Machine )

Duyckinick, Evert A. Portrait Gallery of Eminent Men and Women in Europe and America. New York: Johnson, Wilson & Company, 1873.

This image comes from the Portrait Gallery of the Perry–Castañeda Library of the University of Texas at Austin. According to the collection's title page, the image is in the public domain and no permission is needed to use it. The Library's Material Usage Statement indicates that it appreciates giving its website credit with the phrase: "Courtesy of the University of Texas Libraries, The University of Texas at Austin."