1966 Map of Devore

Settlement patterns in the mid-1960s show a mix of rural ranching and emerging suburban development. To the south, the city of Rialto begins its grid-like expansion near Gilfillan Airport, while the smaller community of Devore sits at the base of the mountains. Regional infrastructure is prominent, including the Lytle Creek Ranger Station, the Glen Helen Rehabilitation Facility, and numerous gaging stations and powerhouses that manage the water and power needs of the growing Inland Empire.