7.5 minute topographical map of Big Lue Mountains, Arizona 2005.
- North American Datum of 1983 (NAD 83). Projection and 1000-meter grid: Universal Transverse Mercator, zone 12 2500-meter ticks: Arizona Coordinate System of 1983 (east zone)
- North American Datum of 1927 (NAD 27) is shown by dashed corner ticks. The values of the shift between NAD 83 and NAD 27 for 7.5-minute intersections are obtainable from National Geodectic Survey NADCON software