Department of Fine Arts, World's Columbian Exposition, Revised Catalogue, Department of Fine Arts, with Index of Exhibitors (Chicago: W.B. Conkey Company, 1893), p. 14.[3]
books.google.com
W. A. Cooper, "Artists in Their Studios: Thomas S. Clarke," Godey's Magazine, vol. 130, no. 779 (May 1895), pp. 469-74.[1]
Obituary: "Thomas Shields Clarke '82," The Princeton Alumni Weekly, December 15, 1920, p. 254.[4]
David B. Dearinger, ed., Paintings and Sculpture at the National Academy of Design, Volume I: 1826-1925 (New York and Manchester: Hudson Hills Press, 2004), p. 457.[5]