John W. Blassingame's classic The Slave Community (Oxford University Press; revised and enlarged edition, 1979, pages 27-9), included photographs of some survivors and citations to interviews with survivors of the Wanderer and Clotilde voyages.

He cites the following sources:

Charles J. Montgomery, "Survivors from the Cargo of the Negro Slave Yacht Wanderer," American Anthropologist, vol. 10 (October 1908), pages 611-23. Based on interviews taken in 1895, includes photos.

Emma Langdon Roche, Historic Sketches of the South (New York, 1914), page 125, and Appendix II. Discusses interviews with nine survivors of Clotilde living near Mobile, Alabama, in 1913.

Tom Henderson Wells, The Slave Ship Wanderer (Athens: University of Georgia Press, 1968)

Zora Neale Hurston, “Cudjo’s Own Story of the Last African Slaves,” Journal of Negro History, vol. 12 (October 1927), pages 648-663.

Related resources:

Robert Ralph Davis, Jr., "Buchanian Espionage: A Report on Illegal Slave Trading in the South in 1859," The Journal of Southern History, Vol. 37, No. 2 (May, 1971), pages 271-278. Discusses President Buchanan's interest in illegal importation of slaves, and the report of a spy he sent to the South to investigate the subject.

Zora Neale Hurston, “The Last Slave Ship,” American Mercury, vol 58 (March 1944), pages 351-358.

Photo of Abache and Cudjoe Kazoola Lewis, Clotilde survivors:
http://www.inmotionaame.org/gallery/detail.cfm?migration=1&topic=8&id=292491&type=image&metadata=&page =

Sketch, "Question of the Month: Cudjo Lewis: Last African Slave in the U.S.?"
http://www.ferris.edu/jimcrow/question/july05/