SEARCHING FOR MY UNCLE WHO WAS ADOPTED IN 1947/48 BORN IN LONG BEACH CA

I know this may be a long shot..... I recently discovered that my Grandmother gave birth to a son in the year of 1947-1948. Unfortunately I do not have much information since she is deceased and I found this out from another older family member. Here is the information that I have.Birth Mother:(my Grandmother): Ora Della West (last name could also be Prouse-1st marriage & Lamb-2nd marriage).Birth Father: Unknown but what I was told he was in the Army.Possible year of birth: 1947-1948.Birthplace: Long Beach, CaOther information I was told-He was adopted by a Doctor and his wife who lived in San Francisco Ca. To find this information out has been such an amazing journey. I know the odds are stacked against me since I do not have much information at all, but it would be great to see if I was able to find him.