1. Illinois (Bureau County), Buda quadrangle : topography Maps University Of Illinois Urbana Champaign Public content 1923. Geological Survey (U.S.). Surveyed in 1921.;Contour interval 20 feet.;Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).