As part of the National Center for Preservation Technology and Training (NCPTT) Prospection in Depth Workshop, the University of Mississippi Center for Archaeological Research conducted a geophysical survey of the Whittington (16NA241) and Ailhaud St. Anne Site (16NA529) sites in Natchitoches Parish, Louisiana using ground penetrating radar (GPR). GPR survey was conducted in conjunction with magnetic gradiometer, electrical resistance, and electromagnetic induction survey conducted by Steve De Vore of the National Park Service’s Midwest Archeological Center. Resulting data were used to guide excavation at the sites during and after the workshop.