lower left in plate: C.A.P. / -"Loading UP"- 2.; lower right in plate: "81"; lower left in graphite: Charles A. Platt.
Alice F. Williams, Washington, DC; Corcoran Gallery of Art, Washington, DC, 1958; acquired 2015 by the National Gallery of Art
- Rice, Richard A. A Descriptive Catalogue of the Etched Works of Charles A. Platt. New York: The De Vinne Press, 1889, pp. 8-9, no. 6.