"Contour interval 100 feet." Relief shown by contours and spot heights. "Compiled in 1955 by photogrammetric methods. Horizontal and vertical control by USGS, USC&GS and CE. Aerial photography 1954. Photography field annotated 1955." "100,000-foot grids based on Oklahoma coordinate system, north zone Includes magnetic declination information, sectionalized township diagram, and location diagram. "36098-A1-TF-250." Includes Harper, Woods, Alfalfa, Grant, Ellis, Woodward, Major, Garfield, Roger Mills, Dewey, Blaine, and Kingfisher counties.