I found a reference to Dale in his sister's obituary:
Redding Record Searchlight (CA) - Tuesday, September 3, 1991
Deceased Name: Cora Hanson
COTTONWOOD - Graveside services for Cora Hanson, 60, of Anderson will be conducted at 10 a.m. Friday at Cottonwood District Cemetery.
The Rev. James Logan of the Valley Christian Center in Anderson will officiate.
Mrs. Hanson died Thursday, Aug. 29, 1991, at Redding Medical Center.
Born Dec. 6, 1930, in Mascot, Neb., she moved to Shasta County in 1971 from Portland, Ore. She was a homemaker.
She is survived by sons John of Cottonwood and Gary; stepsons George and Byran Ferman, both of Pennsylvania; daughters Donnette Bailey of Ulby, Mich., and Chris McDuffie of Spokane, Wash.; brothers Glen Alexander of Needles, Dale Alexander of Dorris, and Elwin Alexander of Lyons, Kan.; sisters Winford Johnson of Anderson and Goldie Jackson of Eugene, Ore.; and 11 grandchildren.
Arrangements are being handled by Anderson's Chapel in Anderson.
If this obituary is accurate, then this means that Dale Alexander was living in Dorris, Siskiyou County, California in 1991.
I'll keep looking...