Again, I apologize for the significant delay in responding to your request. Obviously I'm doing something wrong with Ancestry as I'm not receiving notice when posting are recorded.
Anyhow, there aren't any Crosby/Cosby's buried in Greenlawn-Southwest cemetery, on Panama Lane in Bakersfield, CA. I suggest you contact Greenlawn Cemetery on River Blvd in Bakersfield. Their telephone number is 661-324-9701.
If you are able to locate your family members, please request their plot location and I'll readily obtain headstone photos for you. :) You may also email me directly at firstname.lastname@example.org