Size: 31 x 21 inches (33 x 53.3 cm)
Owner: Virginia Historical Society
This painting, similar to Slaves Waiting for Sale (1861), appeared in Kennedy Quarterly, V.7, No.1, in 1967, at which time it was owned by Kennedy Galleries Inc., New York. On one webpage, http://picturinghistory.gc.cuny.edu/lessons_burnsbrown1.php, the picture is credited to Eyre Crowe.
In fact, it is by Lefevre Cranstone, and is now owned by the Virginia Historical Society. Details & scans here: http://www.vahistorical.org/collections-and-resources/educator-resources/linking-our-past/slave-auction-virginia-lefevre