State Route 78 (Arizona–New Mexico) State Route 78 (Arizona–New Mexico) Arizona State Route 78 (SR 78) and New Mexico State Road 78 (NM 78) are a pair of adjoining state highways located in eastern Arizona and western New Mexico linking U.S. Route 191 (US 191) and Arizona State Route 75 near Greenlee County Airport to US 180 northwest of Cliff, New Mexico. It is also known in its Arizona stretch as Mule Creek Road. The western terminus of SR 78 is located at a junction with US 191 and SR 75 at Three Way, Arizona near Greenlee County Airport. The highway heads northeast from this
Geronimo, Arizona Geronimo, Arizona Geronimo is a populated place located on Highway 70 between Bylas and Fort Thomas west of Safford in Graham County, Arizona. Geronimo lies at an elevation of . Geronimo was named after the famous Apache chief Goyaalé, better known as Geronimo. Camp Thomas, the U. S. Cavalry began its management of the Apache Indian Reservation along the Gila River, was originally located here in 1876. The camp was later moved east to what is now Fort Thomas. Geronimo was once a stop on the Arizona Eastern Railway and had an operating US Post Office from April 30, 1896