4 El Paso high schools have there letters on this mountain. One the left is E for El Paso High, on the right is J for Jefferson high. Just to the north on the west slope near the ridge is C for Coronado High, and on the east slope is A for Austin High. These have been here since the fifties.
There is also an M over by the UTEP campus
http://virtualglobetrotting.com/map/el-paso-m/view/?service=0