prepared by the U.S. Geological Survey for the Federal Capital Development Authority of Nigeria. "Landsat band 7 image (near infrared) 1520-09181, December, 25, 1973." "Computer processing of Landsat scene data was performed by Image Processing Facility, U.S.G.S. Flagstaff Field Center, Flagstaff, Arizona ..." Includes 2 location maps and text.