trying to locate my nephew

Hello,
Kimball Rogers - my nephew, son of Twila may stiers,lawson, rogers.
My sister - Twila died in 1958 in Oxnard, CA at the main hospital....NOW they've all gone regional, and don't have records that far back, they say?
Kimball born in the mid 50's.
Thankyou,
John Stiers in Dallas