Thank you for the great ideas! I live in AZ, so I went to the Orange Co Library website and found that they do not offer obit lookups, but they refer people to the Orange Co Gen. Society, which supposedly offers the service for a fee. I couldn't find reference to that in their site, but they had a list of people you could email, so that will be my next mission.
As for Alice, she was born around 1918 in Douglas, AZ. I deduced this info from the 1920 Douglas, Cochise Co. AZ census. I have not been able to find the family in the 1930 census. Major, Lydia Mae, and Alice (if she lived) lived in AZ through at least the 1940s. Major Barton dies in Los Angeles in 1955, so that is my earliest reference point at putting them in CA.